Mechanism Of Byproducts Formation In The Isobutane/Butene Alkylation On Hy Zeolites,
2018
China University of Petroleum Beijing
Mechanism Of Byproducts Formation In The Isobutane/Butene Alkylation On Hy Zeolites, Zhiwei Chen, Feng Gao, Kun Ren, Quangui Wu, Yan Luo, Hongjun Zhou, Meng Zhang, Quan Xu
Faculty & Staff Scholarship
Submicron-size HY zeolites with a particles size of 200–700 nm were synthesized employing a crystal precipitation method in this study. The catalytic activity for the isobutane/butene alkylation was evaluated. The results indicated that butene conversion was above 90% and the selectivity of expected products (C8) was nearly at 90% within 72 h. The micropores-blocking and coverage of acid sites resulting from high hydrocarbons increased the difficulty for the diffusion of products to the bulk and inhibited the adsorption of reactant on activity sites, which caused deactivation of catalyst. The ultimate C12 content in alkylate oil, stemmed from trimerization of butene, …
Sulfur Resistance Of Ce-Mn/Tio2 Catalysts For Low-Temperature Nh3–Scr,
2018
China University of Petroleum
Sulfur Resistance Of Ce-Mn/Tio2 Catalysts For Low-Temperature Nh3–Scr, Quan Xu, Wenjing Yang, Jason Street, Yan Lou
Faculty & Staff Scholarship
Ce-Mn/TiO2 catalyst prepared using a simple impregnation method demonstrated a better low-temperature selective catalytic reduction of NO with NH3 (NH3–SCR) activity in comparison with the sol-gel method. The Ce-Mn/TiO2 catalyst loading with 20% Ce had the best low-temperature activity and achieved a NO conversion rate higher than 90% at 140–260°C with a 99.7% NO conversion rate at 180°C. The Ce-Mn/TiO2 catalyst only had a 6% NO conversion rate decrease after 100ppm of SO2 was added to the stream. When SO2 was removed from the stream, the catalyst was able to recover completely. The crystal structure, morphology, textural properties and valence …
Catalytic Fast Pyrolysis Of Kraft Lignin Over Hierarchical Hzsm-5 And Hβ Zeolites,
2018
Tianjin University of Technology
Catalytic Fast Pyrolysis Of Kraft Lignin Over Hierarchical Hzsm-5 And Hβ Zeolites, Yadong Bi, Xiaojuan Lei, Guihua Xu, Hui Chen, Jianli Hu
Faculty & Staff Scholarship
The hierarchical HZSM-5 and Hβ zeolites were prepared by alkaline post-treatment methods adopting Na2CO3, TMAOH/NaOH mixture, and NaOH as desilication sources, respectively. More mesopores are produced over two kinds of zeolites, while the micropores portion is well preserved. The mesopores formed in hierarchical Hβ zeolites were directly related to the basicity of the alkaline solution, indicating that Hβ zeolite is more sensitive to the alkaline post-treatment. The hierarchical HZSM-5 and Hβ zeolites are more active than the parent one for catalytic fast pyrolysis (CFP) of Kraft lignin. Hierarchical zeolites retained the function of acid catalysis, while additionally creating larger mesopores …
Development Of A Dynamic Model And Control System For Load-Following Studies Of Supercritical Pulverized Coal Power Plants,
2018
West Virginia University
Development Of A Dynamic Model And Control System For Load-Following Studies Of Supercritical Pulverized Coal Power Plants, Parikshit Sarda, Elijah Hedrick, Katherine Reynolds, Debangsu Bhattacharyya, National Energy Technology Laboratory
Faculty & Staff Scholarship
Traditional energy production plants are increasingly forced to cycle their load and operate under low-load conditions in response to growth in intermittent renewable generation. A plant-wide dynamic model of a supercritical pulverized coal (SCPC) power plant has been developed in the Aspen Plus Dynamics® (APD) software environment and the impact of advanced control strategies on the transient responses of the key variables to load-following operation and disturbances can be studied. Models of various key unit operations, such as the steam turbine, are developed in Aspen Custom Modeler® (ACM) and integrated in the APD environment. A coordinated control system (CCS) is …
A 3d Cancer Cell Migration Assay On A 384-Pillar Plate With Sidewalls,
2018
Cleveland State University
A 3d Cancer Cell Migration Assay On A 384-Pillar Plate With Sidewalls, Nicholas Lesh, Alexander Roth, Stephen Hong, Oju Jeon, Eben Alsberg
Undergraduate Research Posters 2018
Hepatocellular carcinoma (HCC) is an aggressive liver cancer where prognosis is heavily tied to metastasis progression. Researchers look to determine the triggers for metastasis to control its spread. The goal of this project is to determine these triggers by quantifying Hep3B cell migration on a high-throughput platform. We infected Hep3B cells with lentiviruses containing mCherry to produce stable fluorescent cells. Next, we determined the stability of growth factors in oxidized, methacrylated alginate (OMA) hydrogel by binding growth factors with methacrylated heparin sulfate (MHS) before encapsulating in OMA, printing onto the 384-pillar plate with sidewalls, and quantifying growth factor release via …
Formation And Regeneration Of Shape-Selective Zsm-35 Catalysts For N‐Butene Skeletal Isomerization To Isobutene,
2018
China University of Petroleum Bejing
Formation And Regeneration Of Shape-Selective Zsm-35 Catalysts For N‐Butene Skeletal Isomerization To Isobutene, Quan Xu, Wenjing Yang, Zhiwei Chen, Yingchun Ye, Yan Luo, Jason Street, Hongjun Zhou, Chunming Xu
Faculty & Staff Scholarship
Skeletal isomerization of n-butene to isobutene was performed over formed ZSM-35 zeolites in a lab-scale, fixed-bed reactor. The formation conditions to produce isobutene with zeolites were varied to determine the most advantageous binding agent (pseudo-boehmite) amount and steam dealumination conditions. The optimal binding agent amount was 20 wt %. Steam dealumination stabilized the catalysts and enhanced the catalytic performance because of the stable Si/Al framework and suitable acidity. The optimized process conditions involved a reaction temperature of 410 °C, a weight hourly space velocity of 5 h−1, and an n-butene concentration in feedstock of 50%. After being on-stream for 296 …
Photoluminescence Mechanism And Applications Of Zn-Doped Carbon Dots,
2018
State Key Laboratory of Heavy Oil Processing
Photoluminescence Mechanism And Applications Of Zn-Doped Carbon Dots, Quan Xu, Wei Cai, Miaoran Zhang, Yingchun Ye, Yeqing Li, Lipeng Zhang, Yongjian Guo, Zhiqiang Yu, Siyu Li, Xun Lin, Yusheng Chen, Yan Lou, Jason Street, Meng Xu
Faculty & Staff Scholarship
Heteroatom-doped carbon dots (CDs) with excellent optical characteristics and negligible toxicity have emerged in many applications including bioimaging, biosensing, photocatalysis, and photothermal therapy. The metal-doping of CDs using various heteroatoms results in an enhancement of the photophysics but also imparts them with multifunctionality. However, unlike nonmetal doping, typical metal doping results in low fluorescence quantum yields (QYs), and an unclear photoluminescence mechanism. In this contribution, we detail results concerning zinc doped CDs (Zn-CDs) with QYs of up to 35%. The zinc ion charges serve as a surface passivating agent and prevent the aggregation of graphene p–p stacking, leading to an …
Heat, Charge And Spin Transport Of Thin Film Nanostructures,
2018
University of Denver
Heat, Charge And Spin Transport Of Thin Film Nanostructures, Devin John Wesenberg
Electronic Theses and Dissertations
Understanding of fundamental physics of transport properties in thin film nanostructures is crucial for application in spintronic, spin caloritronics and thermoelectric applications. Much of the difficulty in the understanding stems from the measurement itself. In this dissertation I present our thermal isolation platform that is primarily used for detection of thermally induced effects in a wide variety of materials. We can accurately and precisely produce in-plane thermal gradients in these membranes, allowing for thin film measurements on 2-D structures. First, we look at thermoelectric enhancements of doped semiconducting single-walled carbon nanotube thin films. We use the Wiedemann-Franz law to calculate …
Boundary Effects On The Locomotion Of Active Janus Particles,
2018
Cleveland State University
Boundary Effects On The Locomotion Of Active Janus Particles, Marola W. Issa, Nicky R. Baumgartner
Undergraduate Research Posters 2018
Self-propelled or “active” micrometer scale particles are capable of supplying local mechanical work, necessary for microscale cargo delivery and useful in other applications within bioimaging and sensing. Research in the last decade has focused on developing, measuring, and manipulating the locomotion mechanisms of active particles in simple environments. However, many applications will be in complex environments with nearby boundaries or variations in physiochemical cues. This poster reports the directed motion of platinum coated polystyrene particles at infinite dilution in the presence of H2O2, which acts as a fuel to drive motion. A transport mechanism called “diffusiophoresis” drives motion of the …
Treatment Of Non-Epithelial Vaginal Cells From Lysyl Oxidase Like One Knockout Mice (Loxl 1) With Nanoparticles (Nps),
2018
Cleveland State University
Treatment Of Non-Epithelial Vaginal Cells From Lysyl Oxidase Like One Knockout Mice (Loxl 1) With Nanoparticles (Nps), Priya Patel
Undergraduate Research Posters 2018
Female pelvic floor dysfunction includes pelvic organ prolapse (POP) due to multiple vaginal births causing elastin strength to be reduced. Several normal functions are compromised including bladder control, fecal continence, and painful urination and many other symptoms. Currently no effective treatment is known and women seek surgical mesh implants to correct these issues which are not entirely safe nor effective. The condition of POP affects women across the world and effective treatment is sought. Varying proteins including lysyl oxidase (LOX), tissue inhibitors of metalloproteinases, and matrix metalloproteinases are involved in elastin homeostasis. In this experiment, non-epithelial vaginal cells (NEVCs) retrieved …
The Role Of Synthesis Solvent In Particle Size Of Metal Organic Frameworks,
2018
Cleveland State University
The Role Of Synthesis Solvent In Particle Size Of Metal Organic Frameworks, Jonathan Krisak
Undergraduate Research Posters 2018
Metal organic frameworks are a class of nanoporous materials with pore sizes ranging from 0.5 to 3 nm and high surface areas (500-6000 m2/g). These materials have potential applications in industrial catalysis, separation and purification, bio-mimetics, drug delivery, semiconductors, sensors and other electronics. The aim of this study is to understand the role of solvent in control of the particle size of the final MOF product. CuBTC MOF has been used as a model MOF in this study to understand this effect. Altering the dielectric constant of solvents is a potential method of controlling the particle size. The data obtained …
Limits Of Small Scale Pressure Swing Adsorption,
2018
Cleveland State University
Limits Of Small Scale Pressure Swing Adsorption, Aaron A. Moran
ETD Archive
Portable or small scale pressure swing adsorption (PSA) systems have gained increasing popularity in both industry and literature due to the commercial success of personal oxygen concentrators (POCs). While these processes have much in common with larger PSA systems, significant differences exist that make understanding process limitations difficult. These include faster cycle times, smaller adsorbent particles, and a reduced column size. Macropore diffusion is traditionally assumed to control the mass transfer rate in columns packed with zeolite particles in an oxygen production process. While numerous studies have confirmed this assumption for the particle size used in industrial size PSA processes, …
Influence Of Natural Convection During Dendritic Array Growth Of Metal Alloys (Gradient Freeze Directional Solidification),
2018
Cleveland State University
Influence Of Natural Convection During Dendritic Array Growth Of Metal Alloys (Gradient Freeze Directional Solidification), Suyog N. Mahajan
ETD Archive
Purpose of this study was to examine the microstructural evolution of primary dendrites during Gradient Freeze Directional Solidification process in cylindrical Pb-5.8% Sb alloy samples to generate the ground- based research data to support a future microgravity experiment on the Space Station in a convection free environment. Pb-5.8Sb was selected for this study because of its ease of processing and availability of physical property data which will be required for predicting the dendrite morphology parameters, such as, primary dendrite spacing and dendrite trunk diameter. This alloy is also susceptible to thermosolutal convection caused by density inversion of the met in …
Effect Of History On The Binary Adsorption Equilibria Of Aluminium Terephthalate (Mil-53(Al)),
2018
Cleveland State University
Effect Of History On The Binary Adsorption Equilibria Of Aluminium Terephthalate (Mil-53(Al)), Ufuoma Israel Kara
ETD Archive
Metal organic frameworks (MOFs) are highly porous solids with potential applications in a wide range of fields including gas separations and catalysis. Most of porous solids used in these applications such as zeolites and activated carbon usually have rigid structures. In contrast, a number of metal-organic frameworks (MOFs) exhibit structural transformation in response to external stimuli. Such materials show promise for applications such as sensors, actuators and adsorptive separations. Several thermodynamic formalisms were proposed in literature to explain this phenomenon, often known as gate-opening or “breathing” of the MOF material. In this study, the adsorptive behavior of MIL-53(Al), a MOF …
Determination Of Growth Kinetics, Yield Coefficients And Biodiesel Properties For The Green Microalgae Scenedesmus Dimorphus In Freshwater And Saline Medias,
2018
Cleveland State University
Determination Of Growth Kinetics, Yield Coefficients And Biodiesel Properties For The Green Microalgae Scenedesmus Dimorphus In Freshwater And Saline Medias, Morgan L. Cohara
ETD Archive
Of the many alternative resources capable of generating biofuel, microalgal oil serves as a promising feedstock. Unfortunately, biodiesel production from microalgae is currently hindered by high operational costs. One primary causes for these high costs is the large quantity of freshwater required for cultivation. This experiment was designed to assess the feasibility of growing the green, freshwater microalgae Scenedesmus dimorphus in an increasingly saline environment. Both average yield coefficients and growth rates were monitored with increasing salt concentration. Determination of average yield coefficients allows for process scale-up and the optimization of production costs by minimizing raw material waste. Salinity was …
High-Throughput Metabolism-Induced Toxicity Assays On A 384-Pillar Plate,
2018
Cleveland State University
High-Throughput Metabolism-Induced Toxicity Assays On A 384-Pillar Plate, Sooyeion Kang
ETD Archive
The U.S Environmental Protection Agency (EPA) launched the Transform Tox Testing Challenge in 2016 with the goal of developing practical methods that can be integrated into conventional high-throughput screening (HTS) assays to better predict the toxicity of parent compounds and their metabolites in vivo. In response to this need and to retrofit existing HTS assays for assessing metabolism-induced toxicity of compounds, we have developed a 384-pillar plate that is complementary to traditional 384-well plates and ideally suited for culturing human cells in three dimensions (3D) at a microscale. Briefly, human embryonic kidney (HEK) 293 cells in a mixture of alginate …
Maximum Recovery Of Mechanical Energy Through Work Integration: A Work Exchange Network Synthesis Approach,
2018
Wayne State University
Maximum Recovery Of Mechanical Energy Through Work Integration: A Work Exchange Network Synthesis Approach, Aida Amini Rankouhi
Wayne State University Dissertations
Sustainable development has become a key concern in industries, largely due to natural resource depletion, global competition, and environmental pressure. Despite the efforts for sustainability improvement, still over a half of energy consumption is wasted in manufacturing sectors, where the chemical industry is responsible for an energy efficiency lower than it should be. Many attempts have been made to recover the thermal energy using heat integration techniques. Although process work is more expensive than process heat, no efficient solution has been studied to recover mechanical energy yet. In chemical plants, many process streams need to be pressurized or depressurized in …
Multi-Phase Waste Gasification – Reaction Engineering For Sustainable Living Environments,
2018
Cleveland State University
Multi-Phase Waste Gasification – Reaction Engineering For Sustainable Living Environments, Kristen M. Reyes, Mason J. Lang
Undergraduate Research Posters 2018
Gasification converts carbon-based (organic) materials into gaseous products typically referred to as synthetic gas. This technology is an alternative for reducing carbon footprint of energy generation as well as for waste management. This research examines Catalytic Gasification as a route to Sustainability while converting spaceflight and municipal waste into high-value products. As polyethylene (PE) makes up one of the largest portions of both municipal and space waste, this project centered its attention on the gasification of mid-density PE. We used a slurry containing middensity PE, water, and solid catalysts (ruthenium on alumina, Ru/Al2O3) in a 1:1 PE/Ru ratio. The gasification …
Methodology Development For The Implementation Ofmicrofluidic Mixers,
2018
Cleveland State University
Methodology Development For The Implementation Ofmicrofluidic Mixers, Tahir Butt, Gautam Mahajan
Undergraduate Research Posters 2018
Microfluidic platforms have been widely regarded as defining technologies for the development of chemical and biological synthesis and analysis systems, due to benefits associated with reduced reactant consumption, increases by orders of magnitude of the surface-to-volume ratios, and greatly enhanced control over reactions variables such as temperature and pressure. However, one of the bottlenecks for their wide application is the difficulty in achieving mixing, given the typical laminar flows in these systems. In this work we implement experimentally, various strategies using geometrical features to control the fluid motion and induce stirring flows. The mixers are fabricated using soft-lithography in PDMS …
Characterizing Complexes Of Dna And Elastin-Like Polypeptides,
2018
Cleveland State University
Characterizing Complexes Of Dna And Elastin-Like Polypeptides, Bryce Noe
Undergraduate Research Posters 2018
Elastin-like polypeptides (ELPs) are a class of environmental responsive materials. When prepared with a protein motif that selectively binds to nucleic acids, a nucleic acid-ELP complex can be formed, conferring the responsive properties of ELP onto the nucleic acid. One possible use for such a complex is in DNA origami, where nanoscaled assemblies of DNA can be transformed into nanomachines by using the ELP as an actuator. Other possible uses include the isolation and extraction of a selected strands of genetic material, or the delivery of genetic material to a cell. Using a bacterial expression system, our lab has prepared …
