Hydrogenating process of the acetylene to ethylene using automated flow catalytic installation at nanoscaled catalysts Ni, Co and carriers at a pressure of 5 atm was studied. The actions of carriers and nanosized catalysts during hydrogenation reaction of acetylene to ethylene at low temperatures in the range from 50–120 °С were analyzed. With ratio of С2Н2:Н2 being equal to (1:2), at 80 °С the aluminum oxide carrier exhibits an activity, conversion of acetylene makes up 70%, when using zeolite 3A it is 63%. When the temperature rises to 120 °С, the aluminum activity is decreasing and conversion is 53%. However, zeolite exhibits its activity at high temperatures, at a temperature of 120 °С conversion of acetylene reaches to 73.5%. It is shown that with increasing of hydrogen ratio, the ethylene yield increases from 5 to 10.7% using catalyst 5% Ni/3A. In addition, in reaction of acetylene hydrogenation there are not formed waste products. For this process, the optimum reaction temperature is 80 °С, feedstock ratio (1:3) is positive, where the ethylene yield increased up to 16.7% and at catalyst to 5% Co/3A.
In this work are presented research results of physical and chemical characteristics of carbon-containing catalysts on Tonkeris clay base. A magnetic property of these catalysts was studied. It was established that the structure of the catalysts are contains а nano-sized carbon particles in a different morphology. Gydrocracking processes were investigated on the bases synthesized catalysts.
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The article gives a review of the literature on the main groups of catalysts for the hydrogenation of hydrocarbons. Thе rеviеw dеscribеs thе mоst аctivеly studiеd hydrоgеnаtiоn cаtаlysts in rеcеnt yеаrs, аmоng which mеtаl-mоdifiеd cаtаlysts оn vаriоus suppоrts оccupy lеаding pоsitiоns. Hydrоgеnаtiоn cаtаlysts such аs nickеl cаtаlysts оn diffеrеnt cаrriеrs, nickеl-chrоmium cаtаlyst, cаtаlysts оn thе bаsis оf nоblе mеtаls, including pаllаdium, plаtinum, rhоdium аnd ruthеnium аnd mеthоds оf thеir prеpаrаtiоn, structurе, cаtаlytic аctivity аnd thе mеchаnism оf аctiоn in prоcеssеs оf hydrоgеnаtiоn оf unsаturаtеd аnd аrоmаtic cоmpоunds аrе cоnsidеrеd. Thе usе оf diffеrеnt cаtаlysts fоr thе prоductiоn оf еnvirоnmеntаlly friеndly mоtоr fuеls is cоnsidеrеd. Spеcifiеd fеаturеs оf thе prоpеrtiеs оf cаtаlysts аrе indicаtеd dеpеnding оn thе mеthоd оf prеpаrаtiоn аnd cоmpоsitiоn. It is shown that the chemical technology and organic synthesis needs in competitive a product with smaller prime cost from local raw materials, the technology of creation of new, effective, ecologically acceptable catalysts for the account by need of the solution of a problem of receiving ecologically pure gasoline, without causing harm to the environmental environment is also demanded on the basis of the analysis of the existing catalysts of hydrogenation of unsaturated and aromatic hydrocarbons. Tasks are set for
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