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Full-Text Articles in Catalysis and Reaction Engineering
Heterogeneous Catalytic Conversions Of Acetylene, Abduvakhab Ikramov, Sevara Kholikova, Noryigit Musulmanov
Heterogeneous Catalytic Conversions Of Acetylene, Abduvakhab Ikramov, Sevara Kholikova, Noryigit Musulmanov
CHEMISTRY AND CHEMICAL ENGINEERING
The reactions of interaction of acetylene with water vapor, acetic acid and ammonia in the presence of heterogeneous catalysts have investigated. Depending on the nature of the starting components used, acetaldehyde and acetone, vinyl acetate, pyridine bases and pyrrole synthesized. Heterogeneous catalysts selected for each studied reaction based on some scientific prerequisites for the selection of catalysts. Active catalysts for the investigated reactions were determined, which contain compounds of cadmium, zinc, bismuth, chromium, iron and copper, in general, d-group metals. γ-Al2O3, bentonite and kaolin used as a catalyst carrier. Hydrofluoric acid, acetic acid, ammonium fluoride and …
Alkinylation Reactions Of Benzaldehyde By Ethynylbenzene In The Presence Of Some Catalysts, Abdurakhmanova Saida, Ziyadullaev Odiljon, Ikramov Abduvakhab, Dobrynkin Nikolay
Alkinylation Reactions Of Benzaldehyde By Ethynylbenzene In The Presence Of Some Catalysts, Abdurakhmanova Saida, Ziyadullaev Odiljon, Ikramov Abduvakhab, Dobrynkin Nikolay
CHEMISTRY AND CHEMICAL ENGINEERING
The synthesis of acetylene alcohol 1,3-diphenyl propin-2-ol-1, which has several reaction centers in the molecule, is studied. This product was obtained for the first time from a representative of aromatic hydrocarbons of benzaldehyde with phenylacetylene based on an alkynylation reaction in the presence of stereoselective catalysts - ZnEt2/Ti(OiPr)4/PhMe and Sn(OTf)2/NEt3/MeCN. The influence of the activity, stability, and selectivity of the selected catalysts on the yield of products, as well as, the rate of the main reactions, along with side reactions was analyzed. The optimal conditions for the alkynylation reaction and the selectivity of the process are determined. The main and …