A study has been made of themechanisms of redistribution of vanadium and nickel in products of the thermolysis of West Siberian an Buzachi crude oil tars as a function of the temperature and time of heat treatment. It has been shown that, with increasing temperature and time of the process, metals initially accumulate in heavy vacuum residue (pitch) and then pass into coke. It has been established that the maximum concentration of metals in coke is observed at the initial stage of coke formation. The distillate fractions formed are characterized by a low content of metals.
{"title":"Redistribution of vanadium and nickel during tar thermolysis","authors":"L.Ya. Filipenko , A.A. Baturin , Yu.B. Amerik , N.V. Rastova , N.A. Saraikina , G.N. Aleshin , S.N. Khadzhiyev , R.D. Archakova","doi":"10.1016/0031-6458(90)90039-I","DOIUrl":"10.1016/0031-6458(90)90039-I","url":null,"abstract":"<div><p>A study has been made of themechanisms of redistribution of vanadium and nickel in products of the thermolysis of West Siberian an Buzachi crude oil tars as a function of the temperature and time of heat treatment. It has been shown that, with increasing temperature and time of the process, metals initially accumulate in heavy vacuum residue (pitch) and then pass into coke. It has been established that the maximum concentration of metals in coke is observed at the initial stage of coke formation. The distillate fractions formed are characterized by a low content of metals.</p></div>","PeriodicalId":19738,"journal":{"name":"Petroleum Chemistry U.s.s.r.","volume":"30 4","pages":"Pages 235-239"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-6458(90)90039-I","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80998842","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1990-01-01DOI: 10.1016/0031-6458(90)90046-I
{"title":"Abstracts of papers published in Neftekhimiya vol. 30, no. 6","authors":"","doi":"10.1016/0031-6458(90)90046-I","DOIUrl":"https://doi.org/10.1016/0031-6458(90)90046-I","url":null,"abstract":"","PeriodicalId":19738,"journal":{"name":"Petroleum Chemistry U.s.s.r.","volume":"30 4","pages":"Pages 273-277"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-6458(90)90046-I","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136894650","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The activity of lanthanum-containing oxide and hydroxychloride catalysts in oxidative condensation of methane has been studied. It has been established that modification of La2O3 with sodium (NaCl) and application on Al2O3 leads to high selectivity of the process. Selectivity with respect to C2 hydrocarbons at 760°C amounts to 84% with 20·4% methane conversion. Catalyst NaClLaO/Al2O3 is multiphase, and NaCl, LaOCl and LaAlO3 phases coexist in reaction conditions. As the reaction progresses there is a change in the phase composition and selectivity of the catalyst.
{"title":"Oxidative conversion of methane on lanthanum-containing hydroxychloride catalysts","authors":"A.Kh. Mamedov, S.R. Mirzabekova, I.A. Guliyev, S.A. Dzhamalova, S.Kh. Zeinalova, V.S. Aliyev","doi":"10.1016/0031-6458(90)90040-M","DOIUrl":"10.1016/0031-6458(90)90040-M","url":null,"abstract":"<div><p>The activity of lanthanum-containing oxide and hydroxychloride catalysts in oxidative condensation of methane has been studied. It has been established that modification of La<sub>2</sub>O<sub>3</sub> with sodium (NaCl) and application on Al<sub>2</sub>O<sub>3</sub> leads to high selectivity of the process. Selectivity with respect to C<sub>2</sub> hydrocarbons at 760°C amounts to 84% with 20·4% methane conversion. Catalyst NaClLaO/Al<sub>2</sub>O<sub>3</sub> is multiphase, and NaCl, LaOCl and LaAlO<sub>3</sub> phases coexist in reaction conditions. As the reaction progresses there is a change in the phase composition and selectivity of the catalyst.</p></div>","PeriodicalId":19738,"journal":{"name":"Petroleum Chemistry U.s.s.r.","volume":"30 4","pages":"Pages 240-245"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-6458(90)90040-M","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80629960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 1990-01-01DOI: 10.1016/0031-6458(90)90038-H
{"title":"Abstracts of papers published in Neftekhimiya vol. 30, nos 1 & 2","authors":"","doi":"10.1016/0031-6458(90)90038-H","DOIUrl":"https://doi.org/10.1016/0031-6458(90)90038-H","url":null,"abstract":"","PeriodicalId":19738,"journal":{"name":"Petroleum Chemistry U.s.s.r.","volume":"30 1","pages":"Pages 82-91"},"PeriodicalIF":0.0,"publicationDate":"1990-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1016/0031-6458(90)90038-H","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"137323151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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