Catalysis in Industry最新文献_第8页

Effect of the Precursor and Synthesis Regime on the Properties of Hematite for Preparing Promoted Iron Oxide Catalysts 前驱体及合成方式对制备促进氧化铁催化剂赤铁矿性能的影响

IF 0.7

Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020046

A. N. Dvoretskaya, L. G. Anikanova, N. V. Dvoretskii

{"title":"Effect of the Precursor and Synthesis Regime on the Properties of Hematite for Preparing Promoted Iron Oxide Catalysts","authors":"A. N. Dvoretskaya, L. G. Anikanova, N. V. Dvoretskii","doi":"10.1134/S2070050423020046","DOIUrl":"10.1134/S2070050423020046","url":null,"abstract":"The fine crystal structure of hematite samples used for preparing potassium promoted iron oxide catalysts of dehydrogenation is studied via X-ray diffraction and scanning electron microscopy. α-Fe2O3 samples are synthesized under non-equilibrium conditions from several precursors in different regimes of thermolysis. The most important characteristic of hematite that causes the activity and selectivity of a hematite-based catalyst is its fine crystal structure (FCS). The fine crystal structure of hematite predetermines the phase composition of the catalyst. The fine crystal structure of hematite forms during its synthesis and is determined by the nature of the precursor, the temperature of synthesis, the temperature gradient, and the rate of the removal of gaseous thermolysis products. The highest activity is displayed by the catalyst prepared on the basis of hematite with mosaic blocks 70–90 nm in size and a minimum SF concentration caused by half and quaternary dislocations. Such hematite was synthesized via the thermolysis of iron sulfate at 950 K under fluidized bed and low temperature gradient conditions. Hematite from iron carbonate is not recommended for use in synthesizing a catalyst due to the high concentration of low-temperature SFs, which result in the formation of catalytically low-active potassium β-polyferrite.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 2","pages":"144 - 151"},"PeriodicalIF":0.7,"publicationDate":"2023-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4687199","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}

引用次数: 0

Phenol and Tetralin Co-Conversion Regularities under Catalytic Cracking Conditions 催化裂化条件下苯酚与四氢萘共转化规律

IF 0.7

Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020095

P. V. Lipin, V. P. Doronin, O. V. Potapenko, T. P. Sorokina

{"title":"Phenol and Tetralin Co-Conversion Regularities under Catalytic Cracking Conditions","authors":"P. V. Lipin, V. P. Doronin, O. V. Potapenko, T. P. Sorokina","doi":"10.1134/S2070050423020095","DOIUrl":"10.1134/S2070050423020095","url":null,"abstract":"The effect of an oxygen-containing compound on the cracking of an aromatic hydrocarbon is studied using the example of a model phenol–tetralin mixture. An analysis of the temperature dependences of the cracking rate constant of tetralin and tetralin in a mixture with phenol indicates that tetralin cracking is ihhibited during its co-conversion with an oxygen-containing compound due to the greater adsorption capacity of phenol on the catalyst’s surface. It is found that phenol in the model mixture changes the composition of liquid products, especially at low cracking temperatures. The effect of water on the conversion of a phenol-tetralin mixture is studied. It is established that water in the model feedstock reduces the inhibition of the cracking reaction of an aromatic hydrocarbon by an oxygen-containing compound. Based on the results of catalytic reactions, it is determined that when water is added, the level of the overall conversion of the mixture and the conversion of tetralin increase regardless of temperature. No appreciable qualitative differences between the distributions of cracking products in model mixtures with and without water have been revealed.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 2","pages":"203 - 211"},"PeriodicalIF":0.7,"publicationDate":"2023-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4690085","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}

引用次数: 0

Experience in the Development and Introduction of Aluminochromic for Fluidized-Bed Isobutane Dehydrogenation 异丁烷流化床脱氢用变色铝的研制与引进经验

IF 0.7

Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020058

S. R. Egorova, A. A. Lamberov

{"title":"Experience in the Development and Introduction of Aluminochromic for Fluidized-Bed Isobutane Dehydrogenation","authors":"S. R. Egorova, A. A. Lamberov","doi":"10.1134/S2070050423020058","DOIUrl":"10.1134/S2070050423020058","url":null,"abstract":"A summary of experience in the development of a microspherical aluminum–chromium catalyst isobutane dehydrogenation to isobutylene using the Yarsintez technology is presented. The development dynamics of KDI industrial catalysts based on a new boehmite support is considered. The relationships between elemental and phase compositions of catalysts and their operational characteristics are found. A boehmite support was obtained according to a new two-stage scheme, including the hydrothermal treatment of a thermal decomposition product of gibbsite agglomerates with a required size. This technology makes it possible to control the phase composition of a support and the physicomechanical properties of catalysts and their catalytic properties, which made it possible to obtain KDI, KDI-M, and KDI-M1 catalysts. The most important stages of their introduction into commercial operation at Nizhnekamskneftekhim are described. The KDI-M industrial catalyst provides a stable yield of isobutylene of 33–37% during the isobutane dehydrogenation and a yield of methylbutenes of 30% during the isopentane dehydrogenation. The catalyst consumption is 2−3 kg per ton of isobutylene produced. The ways are proposed for the improvement of a catalyst and the optimization of reactor equipment on the basis of monitoring the catalyst operation results. The KDI-M1 industrial catalyst modified with a silicon-containing inorganic complex is better than earlier products of this series in its activity and selectivity according to laboratory tests and is ready for production.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 2","pages":"212 - 219"},"PeriodicalIF":0.7,"publicationDate":"2023-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4688486","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}

引用次数: 0

Effect of Metal-Containing Anions on the Catalytic Properties of Imidazolium Derivatives Immobilized on Silochrome in Oxidative Desulfurization 含金属阴离子对硅铬固载咪唑衍生物氧化脱硫性能的影响

IF 0.7

Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020101

I. G. Tarkhanova, A. G. Ali-Zade, A. K. Buryak, V. M. Zelikman

{"title":"Effect of Metal-Containing Anions on the Catalytic Properties of Imidazolium Derivatives Immobilized on Silochrome in Oxidative Desulfurization","authors":"I. G. Tarkhanova, A. G. Ali-Zade, A. K. Buryak, V. M. Zelikman","doi":"10.1134/S2070050423020101","DOIUrl":"10.1134/S2070050423020101","url":null,"abstract":"A comparative analysis is performed for the properties of two Fenton-type catalysts in the oxidation of sulfur-containing compounds with hydrogen peroxide and the desulfurization of crude oil. The catalysts are based on Cu(I) and Fe(III), and Mo(VI) and W(VI) polyoxometalates. Heterogeneous samples are imidazolium salts chemically immobilized on surfaces of silochrome and contain the iron and copper chloride complexes or phosphomolybdic and phosphotungstic acid anions. Thiophene (T), dibenzothiophene (DBT), methylphenyl sulfide (MPS), and a diesel fraction with an initial amount of sulfur of 1080 ppm are used as model substrates. It is found that the order of reactivity of thiophene substrates depends on the nature of metal-containing anions: thiophene > DBT on the Cu and Fe catalysts and DBT > thiophene on the polyoxometalate catalysts. This effect is explained using literature data. The catalyst based on phosphotungstic acid allows desulfurization of the diesel fraction of oil to amounts of sulfur of < 10 ppm, which meets today’s environmental standards.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 2","pages":"125 - 131"},"PeriodicalIF":0.7,"publicationDate":"2023-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4979211","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}

引用次数: 0

Studying the Hydroisomerization of Diesel Fractions with Different Concentrations of Nitrogen-Containing Compounds on Bifunctional Catalysts Based on ZSM-23 and Non-Noble Metals ZSM-23和非贵金属双功能催化剂对不同浓度含氮化合物柴油馏分加氢异构化反应的研究

IF 0.7

Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020034

T. S. Bogomolova, M. Yu. Smirnova, O. V. Klimov, A. S. Noskov

引用次数: 1

Catalytic Hydrogen Storage Systems Based on Hydrogenation and Dehydrogenation Reactions 基于加氢和脱氢反应的催化储氢系统

IF 0.7

Catalysis in Industry Pub Date : 2023-06-17 DOI: 10.1134/S2070050423020083

A. N. Kalenchuk, V. I. Bogdan

引用次数: 0

Biodiesel Production from Waste Cooking Oil, Using an Acid Modified Carbon Catalyst Derived from Cassava Peels 使用从木薯皮中提取的酸改性碳催化剂从废食用油中生产生物柴油

IF 0.7

Catalysis in Industry Pub Date : 2023-05-23 DOI: 10.1134/S2070050423010038

Mustapha D. Garba, Abubakar M. Sunusi, Sadi A. Hassan, S. David Jackson

{"title":"Biodiesel Production from Waste Cooking Oil, Using an Acid Modified Carbon Catalyst Derived from Cassava Peels","authors":"Mustapha D. Garba, Abubakar M. Sunusi, Sadi A. Hassan, S. David Jackson","doi":"10.1134/S2070050423010038","DOIUrl":"10.1134/S2070050423010038","url":null,"abstract":"An investigation was carried out to study the feasibility of using synthesized acid-bearing carbonaceous catalyst (SO3H–C and PO4H2–C) derived from cassava peel for biodiesel production from waste cooking oil (WCO). The catalyst activity was tested using an autoclave type reactor and three different oil to alcohol ratios (1 : 3, 1 : 5 and 1 : 7) at four different temperatures (50–80°C) for 4 h. Two types of alcohol (i.e. methanol (CH3OH) and ethanol (C2H5OH) were used to understand the efficiency of using alcohol in the process. The study indicates that reaction using high ratio of alcohol (1 : 7) generally produced high yield of the biodiesel compared to other ratios. The yield of the biodiesel also increased with increasing temperature over all the reaction systems. The carbon modified with sulphuric acid catalyst showed the highest yield of ~ 90%, which was obtained at 80°C using a 1 : 7 ratio of WCO : alcohol. It was also observed that reaction with methanol produced better yields compared to ethanol reactions where significant differences were observed across both temperature and ratio. The catalysts were characterized using Fourier transform infrared spectroscopy, X-ray powder diffraction, surface area and pore volume analyses. The catalyst is of interest because it is green, non-toxic and synthesized using cassava peel waste.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 1","pages":"99 - 107"},"PeriodicalIF":0.7,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4909299","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}

引用次数: 0

Copper Based Biomimetic Catalysts of Catechol Oxidase: An Overview on Recent Trends 邻苯二酚氧化酶铜基仿生催化剂研究进展

IF 0.7

Catalysis in Industry Pub Date : 2023-05-23 DOI: 10.1134/S2070050423010063

Sahin Reja, Ambica Kejriwal, Rajesh Kumar Das

引用次数: 0

Cobalt Supported and Polyfunctional Hybrid Catalysts for Selective Fischer–Tropsch Synthesis: A Review 钴负载多能杂化催化剂选择性费托合成研究进展

IF 0.7

Catalysis in Industry Pub Date : 2023-05-23 DOI: 10.1134/S2070050423010099

R. E. Yakovenko, V. G. Bakun, S. I. Sulima, G. B. Narochnyi, S. A. Mitchenko, I. N. Zubkov, A. P. Savost’yanov

{"title":"Cobalt Supported and Polyfunctional Hybrid Catalysts for Selective Fischer–Tropsch Synthesis: A Review","authors":"R. E. Yakovenko, V. G. Bakun, S. I. Sulima, G. B. Narochnyi, S. A. Mitchenko, I. N. Zubkov, A. P. Savost’yanov","doi":"10.1134/S2070050423010099","DOIUrl":"10.1134/S2070050423010099","url":null,"abstract":"A review of modern approaches to the development of cobalt catalyst technology used in most known ways of synthesizing hydrocarbons from CO and H2 using the Fischer–Tropsch is presented. The development of efficient catalysts solves the problem of replacing fossil fuels with ultra-clean alternative fuels and reduces their negative impact on the environment. An analysis of results from scientific and technological research, including ones obtained recently by the authors, shows current lines in developing the technology of high-performance catalysts for the Fischer–Tropsch synthesis of hydrocarbons using classical and integrated GTL technology, including the creation of new types of polyfunctional systems. The review mainly describes the catalytic characteristics of supported cobalt catalysts synthesized via impregnation and polyfunctional hybrid catalysts obtained on their basis for the selective synthesis of fuel fraction hydrocarbons. Problems of controlling selectivity, productivity, and changes in the activity and physicochemical properties of catalysts during long-term operation are considered.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 1","pages":"6 - 20"},"PeriodicalIF":0.7,"publicationDate":"2023-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"4909302","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}

引用次数: 0

Aerobic Oxidative Cyclization of 2-Mercaptobenzamide to 1,2-Benzoisothiazolin-3-one in the Presence of Mn(OAc)2 在Mn(OAc)2存在下2-巯基苯甲酰胺有氧氧化环化制1,2-苯并异噻唑啉-3- 1

IF 0.7

Catalysis in Industry Pub Date : 2023-05-23 DOI: 10.1134/S2070050423010087

Xuchen Shang, Pan He, Yingchao Dou, Bo Yang, Guanyu Yang

引用次数: 0