Catalysis in Industry最新文献

{"title":"Effect of Alumina Support Modification on the State of the Active Surface of Alumina–Nickel–Molybdenum Catalysts for Ethylene Conversion to Propylene","authors":"T. R. Karpova,&nbsp;A. V. Lavrenov,&nbsp;M. A. Moiseenko,&nbsp;T. I. Gulyaeva,&nbsp;A. B. Arbuzov,&nbsp;O. V. Gorbunova,&nbsp;I. V. Muromtsev","doi":"10.1134/S2070050426700091","DOIUrl":"10.1134/S2070050426700091","url":null,"abstract":"<p>Nickel and molybdenum oxide catalysts synthesized using cation- and anion-modified alumina as a support (Na₂O–Al₂O₃, MgO–Al₂O₃, Al₂O₃–Al₂O₃, ZrO₂–Al₂O₃, B₂O₃–Al₂O₃, <span>({text{SO}}_{4}^{{2 - }})</span>–Al₂O₃) were studied. Data on the effect of support surface modification on the physicochemical properties and activity of the catalysts in ethylene conversion to propylene were obtained. It was shown that anionic modification (B₂O₃–Al₂O₃, <span>({text{SO}}_{4}^{{2 - }})</span>–Al₂O₃) improves catalyst activity catalyst activity due to the formation of octahedrally coordinated Ni²⁺ cations bound to the surface acid sites of the support. Cationic modification (Na₂O–Al₂O₃, MgO–Al₂O₃, Al₂O₃–Al₂O₃, ZrO₂–Al₂O₃), conversely, suppresses the development of ethylene conversion reactions due to a lower content of medium-strength and strong acid sites, which determine the strength of interaction with nickel cations, on the surface of these supports. The maximum propylene yield of 51–52 wt % is provided by catalysts based on a borate-containing support and unmodified alumina. They are characterized by the presence of highly dispersed species of polymolybdate compounds and medium-strength Brønsted acid sites on their surface.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 2","pages":"149 - 158"},"PeriodicalIF":1.3,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147924088","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}

{"title":"Dependence of the Emissions of Sulfur and Nitrogen Oxides during the Regeneration of Cracking Catalysts for Feedstocks of Different Composition and Degree of Hydrotreatment","authors":"E. O. Kobzar’,&nbsp;K. I. Dmitriev,&nbsp;T. V. Bobkova,&nbsp;O. V. Potapenko","doi":"10.1134/S2070050426700066","DOIUrl":"10.1134/S2070050426700066","url":null,"abstract":"<p>The effect produced by the degree of hydrotreatment and the content of heteroatoms in an initial cracking feedstock on its conversion, the distribution of cracking products, and the composition of regeneration gases was studied. The four types of feedstocks, such as a hydrocracking residue, hydrotreated vacuum gas oil, nonhydrotreated vacuum gas oil, and a mixed feedstock containing 20% of mazut and 80% of nonhydrotreated vacuum gas oil, were investigated. To each type of feedstock, indole, quinoline, and benzothiophene were added. It was established that, when the depth of feedstock hydroskimming decreases, the conversion and the yield of cracking products (gasoline and light olefines) become lower, and the concentrations of sulfur nitrogen oxides in regeneration gases grow. In this paper, the influence of sulfur- and nitrogen-containing compounds in a catalytic cracking feedstock on the yield of products and the composition of regeneration gases is shown. Sulfur- and nitrogen-containing compounds in a cracking feedstock decrease the conversion and the yield of target products, and the presence of basic nitrogen compounds in a feedstock leads to the formation of a large quantity of nitrogen oxides during the regeneration of a given catalyst.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 2","pages":"120 - 129"},"PeriodicalIF":1.3,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147924143","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}

{"title":"Ethylene Dimerization in the Presence of Supported Palladium, Nickel, and Cobalt Oxides: Effect of the Nature of the Support","authors":"R. M. Mironenko,&nbsp;A. V. Lavrenov,&nbsp;Yu. A. Chumachenko,&nbsp;E. R. Saibulina,&nbsp;T. R. Karpova,&nbsp;M. A. Moiseenko,&nbsp;O. V. Gorbunova,&nbsp;T. I. Gulyaeva,&nbsp;N. V. Kornienko,&nbsp;I. V. Muromtsev,&nbsp;M. V. Trenikhin","doi":"10.1134/S2070050426700054","DOIUrl":"10.1134/S2070050426700054","url":null,"abstract":"<p>Palladium, nickel, and cobalt oxides supported on the surface of various porous materials (γ‑Al₂O₃, B₂O₃/Al₂O₃, activated carbon, Sibunit) were studied as ethylene dimerization catalysts. It was found that the use of alumina supports is crucial for synthesizing palladium- and nickel-containing catalysts exhibiting activity in ethylene dimerization. Supporting on carbon materials leads to the systems containing palladium and nickel mostly in the metallic state, which does not provide the occurrence of ethylene conversion reactions. Cobalt-containing catalysts, conversely, are most active in the case of supporting on a carbon surface, on which CoO particles are formed. These catalysts, due to low acid site concentrations on their surface, have an advantage in terms of achieving the maximum yield of butene-1, which is the most sought-after product of ethylene dimerization.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 2","pages":"109 - 119"},"PeriodicalIF":1.3,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147924142","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}

{"title":"Effect of CO2 Content in Synthesis Gas on the Activity and Selectivity of a Co/SiO2 + ZSM-5 + Al2O3 Bifunctional Catalyst","authors":"G. B. Narochnyi,&nbsp;I. N. Zubkov,&nbsp;O. P. Papeta,&nbsp;E. A. Bozhenko,&nbsp;A. P. Savost’yanov,&nbsp;R. E. Yakovenko","doi":"10.1134/S2070050426700030","DOIUrl":"10.1134/S2070050426700030","url":null,"abstract":"<p>The effect of CO₂ content in synthesis gas on the hydrocarbon synthesis–hydrotreatment combined procedure in the presence of a Co/SiO₂+ZSM-5+Al₂O₃ bifunctional catalyst was studied. The studies were conducted in a CO₂ content range of 0–60 vol % at temperatures of 240 and 250°C, a pressure of 2.0 MPa, and a GHSV of 1000 h⁻¹. It was that CO₂ can be partly converted to synthetic hydrocarbons in the presence of the bifunctional cobalt catalyst. The carbon dioxide added to synthesis gas undergoes conversion in a CO₂ concentration range of 20–40 vol %. The maximum CO₂ conversion is 5.3% at 240°C and 20 vol % of CO₂ in the gas. The addition of CO₂ to synthesis gas leads to an increase in the content of branched hydrocarbons in the Fischer–Tropsch synthesis products. These hydrocarbons contribute to an improvement in the detonation resistance of gasoline and the low-temperature properties of the diesel fraction (cloud point, cold filter plugging point).</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 2","pages":"90 - 96"},"PeriodicalIF":1.3,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147924138","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}

{"title":"Activation of Sibunit Carbon Materials with Nitrogen(II) Oxide: Studying the Physicochemical and Adsorption Properties of Nitrogen-Containing Supports and Testing the Resulting Adsorbents for Preparing Biocatalysts for the Low-Temperature Synthesis of Esters","authors":"A. V. Nartova,&nbsp;A. A. Ananina,&nbsp;S. V. Semikolenov,&nbsp;L. V. Perminova,&nbsp;A. B. Beklemishev,&nbsp;Yu. V. Larichev,&nbsp;A. N. Salanov,&nbsp;G. A. Kovalenko","doi":"10.1134/S2070050426700108","DOIUrl":"10.1134/S2070050426700108","url":null,"abstract":"<p>The activation of the Sibunit carbon material by etching with nitric oxide (NO) enabled the synthesis of nitrogen-containing supports with a content of introduced nitrogen (N) varied in a range of 2.3–10.7 at % (according to XPS). Etching was implemented in a high-pressure reactor (15–29 atm) at elevated temperatures (180 and 230°C). The physicochemical and adsorption properties of the synthesized nitrogen-containing carbon supports were studied. Thus, studies of the texture of the supports showed that with an increase in the nitrogen content, the specific surface area of the materials decreases from 470 to 65 m²/g, while the average pore diameter increases from 7.4 to 18.1 nm. The analysis of XP spectra revealed that the N atom in the carbon materials is present in five forms. For the material with the maximum nitrogen content (11.7 at %), the proportions of states (α) of different forms are the following: α = 0.47 (pyridinic), α = 0.38 (pyrrolic), α = 0.13 (graphitic N), and α = 0.011 and 0.0077 (as a part of O=NC and C–NO₂ groups, respectively.. The synthesized nitrogen-containing carbon materials were studied as adsorbents for the immobilization of the recombinant r<i>Pichia</i>/lip lipase. Using SAXS and SEM methods, it was shown that the adsorbed lipase is capable of forming octamers and larger complex-structure aggregates (composed of more than 100 molecules). The content of individual (nonaggregated) enzyme molecules increased (by 3.3 times) with an increase in the nitrogen content (up to 11 at %) in the carbon material. Biocatalysts (BCs) prepared by the adsorptive immobilization of the recombinant r<i>Pichia</i>/lip lipase were tested in the low-temperature esterification of heptanoic acid (C₇) with butyl alcohol (C₄) in hexane. It was found that the introduction of nitrogen during a single-stage post-activation of the Sibunit material with NO has a significant positive effect on the enzyme activity and stability of the prepared BCs. The optimum content of introduced nitrogen is 7–10 at %; in this case, the biocatalytic activity increases by 2–3 times (as compered to the original Sibunit), and the heptanoic acid conversion is 84% within 6 h at 20 ± 2°C.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 2","pages":"159 - 170"},"PeriodicalIF":1.3,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147924089","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}

{"title":"A Palladium(II) + Heteropoly Acid Catalyst System for the Conversion of Linear α-Olefins to Marketable 2-Ketones","authors":"Yu. A. Rodikova,&nbsp;E. G. Zhizhina","doi":"10.1134/S207005042670008X","DOIUrl":"10.1134/S207005042670008X","url":null,"abstract":"<p>The ability to undergo reversible electron addition while preserving structural stability makes vanadium-containing polyoxometalates attractive objects for research in various fields of chemistry, in particular, the development of modern “green” processes. An efficient Pd-containing catalyst system based on Pd(OAc)₂ and a NaH₁₀P₄Mo₁₈V₇O₈₇ high-vanadium heteropoly acid for the two-stage oxidation of C₅–C₁₀ linear α-olefins to respective 2-ketones with a yield of over 93% in a two-phase water–organic medium has been developed. The system provides the achievement of economically promising process efficiency parameters; it is suitable for multicycle use and eliminates the need for high-pressure equipment in implementing the target reaction.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 2","pages":"138 - 148"},"PeriodicalIF":1.3,"publicationDate":"2026-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147924144","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}

{"title":"Use of Hydrodynamic Cavitation to Intensify Solketal Synthesis from Glycerol and Acetone","authors":"O. N. Kovalenko,&nbsp;I. I. Simentsova,&nbsp;V. N. Panchenko,&nbsp;M. N. Timofeeva","doi":"10.1134/S2070050425700382","DOIUrl":"10.1134/S2070050425700382","url":null,"abstract":"<p>The possibility of using hydrodynamic cavitation to intensify solketal synthesis from glycerol and acetone in the presence of a zeolite has been shown for the first time. The reaction in the presence of faujasite zeolite (FAU, SiO₂/Al₂O₃ = 14.9) has been studied. It has been found that the use of hydrodynamic cavitation contributes to an increase in glycerol conversion from 35.2 to 66.8% within 30 min of reaction without changing the solketal selectivity at an acetone/glycerol molar ratio of 2.5, a catalyst loading of 1.6 wt % (per loaded glycerol weight), and 25°C. The results show that the cavitation mode can be thought of as a promising method for intensifying glycerol ketal and acetal synthesis reactions.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 1","pages":"59 - 70"},"PeriodicalIF":1.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579299","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}

{"title":"Advances in the Development of Oxide Catalysts for Nonoxidative Propane Dehydrogenation as an Alternative to Commercial Platinum and Chromium Catalysts: A Review","authors":"K. Yu. Koltunov,&nbsp;V. V. Kaichev,&nbsp;V. I. Sobolev","doi":"10.1134/S2070050425700370","DOIUrl":"10.1134/S2070050425700370","url":null,"abstract":"<p>Catalytic propane dehydrogenation is the targeted and most efficient industrial method for producing propylene. The practical significance of this method is steadily increasing given the relative availability of propane as a feedstock. The review discusses the prospects for developing next-generation propane dehydrogenation catalysts based on transition metal oxides (Zn, Ga, Co, V) that can compete with commercial platinum and chromium catalysts. This review announces a series of reports on this subject as part of scientific research supported by the Russian Science Foundation.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 1","pages":"45 - 58"},"PeriodicalIF":1.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579412","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}

{"title":"Purifying Tail Gases of Sulfur Production Units at GPPs and Refineries. Technical and Economic Aspects of Technologies. Experience of the Boreskov Institute of Catalysis SB RAS","authors":"S. R. Khairulin,&nbsp;M. A. Kerzhentsev,&nbsp;A. V. Salnikov","doi":"10.1134/S2070050425700345","DOIUrl":"10.1134/S2070050425700345","url":null,"abstract":"<p>The article provides a brief comparative review of various methods of tail gas treatment in sulfur production at Claus plants. The main directions for improving the quality of the treatment from the point of view of improving the environmental and economic indicators of the process are considered. The practical experience of the Boreskov Institute of Catalysis of the Siberian Branch of the Russian Academy of Sciences in the development of technologies for the treatment of tail gases of Claus installations is presented.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 1","pages":"15 - 27"},"PeriodicalIF":1.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579373","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}

{"title":"Oxidative Oligomerization of a Synthetic Hydrocarbon Fraction Produced by Fischer–Tropsch Synthesis","authors":"Ya. V. Katariya,&nbsp;V. A. Klushin,&nbsp;V. P. Kashparova,&nbsp;A. V. Sotnikov,&nbsp;R. E. Yakovenko,&nbsp;A. P. Savost’yanov,&nbsp;I. N. Zubkov","doi":"10.1134/S2070050425700357","DOIUrl":"10.1134/S2070050425700357","url":null,"abstract":"<p>The oxidative oligomerization of Fischer–Tropsch synthesis products, namely, C₁₀–C₁₅ hydrocarbon fractions with a total content of alkenes (mostly β- and γ-alkenes) of 64.7 wt % using zirconium octoate as a catalyst has been studied. The hydrocarbon fraction has been produced in the presence of a zeolite-containing catalyst at a pressure of 2.0 MPa, a temperature of 250°C, and an H₂/CO ratio at the inlet of the reactor of 1.70, a gas hourly space velocity of 1000 h^–1, and a circulation ratio range of 0–16. It has been found that, at a temperature of 160°C, a catalyst content of 5.0 wt %, a process time of 6 h, and a pressure (air) of 2.5 MPa, the target fraction yield is 52.7%. It has been revealed that the oligomerization product has a low pour point of <i>−</i>31°C. It has been proposed that the viscosity characteristics of the oligomerization product can be improved by introducing additives, such as polymethacrylates or polyisobutylene.</p>","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"18 1","pages":"28 - 36"},"PeriodicalIF":1.3,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147579374","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}