Catalysis in Industry最新文献_第3页

Use of Microalgae Biomass to Synthesize Marketable Products: 2. Modern Approaches to Integrated Biorefinery of Microalgae Biomass 利用微藻生物质合成适销产品：2.微藻生物质综合生物炼制的现代方法

IF 0.7

Catalysis in Industry Pub Date : 2024-05-13 DOI: 10.1134/S2070050424010057

Yu. V. Samoylova, K. N. Sorokina, V. N. Parmon

引用次数: 0

Biocatalytic Conversion of Semi-Finished Hardwood into Sugars: Enzymatic Hydrolysis at High Concentrations of the Substrate 生物催化将半成品硬木转化为糖：高浓度底物的酶水解作用

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Catalysis in Industry Pub Date : 2024-05-13 DOI: 10.1134/S2070050424010070

M. V. Semenova, V. D. Telitsin, A. M. Rozhkova, E. G. Kondratyeva, I. A. Shashkov, A. D. Satrutdinov, Ya. A. Gareeva, V. G. Moseev, A. M. Kryazhev, A. P. Sinitsyn

{"title":"Biocatalytic Conversion of Semi-Finished Hardwood into Sugars: Enzymatic Hydrolysis at High Concentrations of the Substrate","authors":"M. V. Semenova, V. D. Telitsin, A. M. Rozhkova, E. G. Kondratyeva, I. A. Shashkov, A. D. Satrutdinov, Ya. A. Gareeva, V. G. Moseev, A. M. Kryazhev, A. P. Sinitsyn","doi":"10.1134/S2070050424010070","DOIUrl":"10.1134/S2070050424010070","url":null,"abstract":"Exhaustive enzymatic hydrolysis is performed for semi-bleached sulfate hardwood cellulose (a semi-finished pulp and paper product) at ultra-high concentrations of it in a reaction mixture (up to 300 g/L per dry compound). Russian commercial enzyme preparations are used for hydrolysis. The best seems to be Agroxil Plus, which has high cellulase and endoxylanase activities. A total of 290 g/L of sugars (including 210 g/L of glucose and 30 g/L of xylose) is obtained using Agroxil Plus (20 mg protein/1 g substrate) in combination with an auxiliary β-glucosidase enzyme preparation (2 mg protein/1 g substrate) at an initial semi-bleached cellulose concentration of 300 g/L. The dosage of Agroxil Plus can be halved (10 mg of protein/1 g of substrate with a total concentration of semi-bleached cellulose of 300 g/L) with a high yield of hydrolysis product (270 g/L of sugars, including 200 g/L of glucose and 30 g/L of xylose), due to the fractional addition of a substrate.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"16 1","pages":"102 - 109"},"PeriodicalIF":0.7,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140939733","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

Catalytic Conversion of Ethanol to Aromatic Hydrocarbons in the Presence of Zeolite Catalysts 在沸石催化剂存在下催化乙醇转化为芳香烃

IF 0.7

Catalysis in Industry Pub Date : 2024-05-13 DOI: 10.1134/S2070050424010033

V. A. Koveza, O. V. Potapenko, A. V. Lavrenov

引用次数: 0

Deactivation of Mg/HZSM-5 Catalysts for the Synthesis of Lower Olefins from Dimethyl Ether in a Slurry Reactor 淤浆反应器中以二甲醚为原料合成低级烯烃的 Mg/HZSM-5 催化剂失活研究

IF 0.7

Catalysis in Industry Pub Date : 2024-05-13 DOI: 10.1134/S2070050424010094

A. N. Stashenko, T. I. Batova, T. K. Obukhova, N. V. Kolesnichenko

{"title":"Deactivation of Mg/HZSM-5 Catalysts for the Synthesis of Lower Olefins from Dimethyl Ether in a Slurry Reactor","authors":"A. N. Stashenko, T. I. Batova, T. K. Obukhova, N. V. Kolesnichenko","doi":"10.1134/S2070050424010094","DOIUrl":"10.1134/S2070050424010094","url":null,"abstract":"Under slurry reactor conditions, the products of condensation are generrally formed on strong Mg/HZSM-5 acid sites independently of the SiO2/Al2O3 molar ratio in the zeolite. The composition of condensation products remains virtually unchanged as the molar ratio grows and basically consists of trimethyl and tetramethyl benzenes, but their content falls as the volume of mesopores grows with increasing SiO2/Al2O3. This lowers the hindrances to diffusion and the contribution from secondary reactions to improve the removal of coke precursors from the zeolite’s surface and favorably affect the catalyst’s activity (DME conversion doubles). The composition of reaction products changes slightly with an increase in the SiO2/Al2O3 molar ratio, and the total selectivity toward lower olefins is ~70 wt %. A rapid loss in Mg/HZSM-5 activity upon extending the period of operation under slurry reactor conditions is not due to coking, but to the catalyst being clogged by dispersion medium (polydimethylsiloxane) decomposition products.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"16 1","pages":"7 - 13"},"PeriodicalIF":0.7,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140939950","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

Estimating the Efficiency of Commercial Domestic Catalysts in the Reaction of Ammonia Decomposition 估算商用家用催化剂在氨分解反应中的效率

IF 0.7

Catalysis in Industry Pub Date : 2024-05-13 DOI: 10.1134/S2070050424010100

R. E. Yakovenko, T. V. Krasnyakova, A. V. Dul’nev, A. N. Saliev, M. A. Shilov, A. V. Volik, A. P. Savost’yanov, S. A. Mitchenko

{"title":"Estimating the Efficiency of Commercial Domestic Catalysts in the Reaction of Ammonia Decomposition","authors":"R. E. Yakovenko, T. V. Krasnyakova, A. V. Dul’nev, A. N. Saliev, M. A. Shilov, A. V. Volik, A. P. Savost’yanov, S. A. Mitchenko","doi":"10.1134/S2070050424010100","DOIUrl":"10.1134/S2070050424010100","url":null,"abstract":"Adapting domestic commercial catalysts for use in such important technological processes as the environmentally friendly production of hydrogen accompanied by СОх and NОх emissions is in demand under import substitution conditions. Ammonia seems to be the most promising Н2 accumulator, due to its high hydrogen density and simple storage and transportation. This work considers the possibility of using the domestic NIAP-03-01, NIAP-07-01, NIAP-06-06 catalysts and Со-Al2O3/SiO2 developed by the authors in the ammonia dissociation reaction. The conversion and hydrogen production capacity grow in the order NIAP-06-06<NIAP-03-01<NIAP-07-01<Со-Al2O3/SiO2. The conversion of ammonia on Со-Al2O3/SiO2 is close to 100% at 550°C and a gas hourly space velocity (GHSV) of 3000 h−1. The effective activation energies of all the catalysts are comparable to the available literature data for the ammonia decomposition reaction to potentially enable their application at moderate temperatures.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"16 1","pages":"58 - 68"},"PeriodicalIF":0.7,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140939802","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

Use of Microalgae Biomass to Synthesize Marketable Products: 4. Production of Biofuels from Microalgae Using Bioengineering Approaches 利用微藻生物质合成适销产品：4.利用生物工程方法从微藻中生产生物燃料

IF 0.7

Catalysis in Industry Pub Date : 2024-05-13 DOI: 10.1134/S2070050424010069

Yu. V. Samoylova, K. N. Sorokina, V. N. Parmon

引用次数: 0

Catalytic Hydrogenation of Carbon Dioxide as a Method to Produce Valuable Chemicals 将二氧化碳催化氢化作为生产有价值化学品的一种方法

IF 0.7

Catalysis in Industry Pub Date : 2024-05-13 DOI: 10.1134/S2070050424010045

I. A. Makaryan, I. V. Sedov, V. I. Savchenko

引用次数: 0

Preparing Zeolite-Containing Adsorbents with Different Kaolins for the Efficient Drying and Purification of Natural Gas 用不同的高岭土制备含沸石的吸附剂以高效干燥和净化天然气

IF 0.7

Catalysis in Industry Pub Date : 2024-05-13 DOI: 10.1134/S2070050424010021

I. Kh. Allaguzin, O. S. Travkina, B. I. Kutepov, D. Sh. Sabirov

引用次数: 0

Bifunctional Cobalt Catalysts for the Fischer–Tropsch Synthesis of Low-Pour-Point Diesel Fuel: From Development to Implementation: 2. Optimization of the Catalyst Component Composition 用于费托合成低倾点柴油的双功能钴催化剂：从开发到实施：2. 催化剂组分的优化

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040128

R. E. Yakovenko, V. G. Bakun, I. N. Zubkov, O. P. Papeta, A. N. Saliev, A. P. Savost’yanov

{"title":"Bifunctional Cobalt Catalysts for the Fischer–Tropsch Synthesis of Low-Pour-Point Diesel Fuel: From Development to Implementation: 2. Optimization of the Catalyst Component Composition","authors":"R. E. Yakovenko, V. G. Bakun, I. N. Zubkov, O. P. Papeta, A. N. Saliev, A. P. Savost’yanov","doi":"10.1134/S2070050423040128","DOIUrl":"10.1134/S2070050423040128","url":null,"abstract":"The effect of the content of metallic (Co–Al2O3/SiO2 catalyst) and acidic components (ZSM-5 zeolite in H-form) on the properties of a bifunctional catalyst for the integrated synthesis of low-pour-point diesel fuel by the Fischer–Tropsch method has been studied. The catalysts in the form of a composite mixture with a binder (boehmite) have been characterized by XRD, BET, and TPR methods. The tests are conducted in a fixed-bed flow reactor at a pressure of 2.0 MPa, a temperature of 240°C, and a gas space velocity of 1000 h–1. The activity and selectivity of catalysts and the fractional and hydrocarbon compositions of products as a function of the ratio of components have been compared. It has been found that the synthesis productivity with respect to С5+ hydrocarbons and selectivity to products of the С11–C18 diesel fraction with a high content of isomeric products correlate with the ratio of metallic and acidic components in the catalyst composition. The catalyst recommended for use in diesel fuel production has a composition with a ratio of metallic and acidic components of 1.17.","PeriodicalId":507,"journal":{"name":"Catalysis in Industry","volume":"15 4","pages":"357 - 366"},"PeriodicalIF":0.7,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139053601","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

Selective Catalytic Hydrodebromination of 2,3,4,5-Tetrabromothiophene with Hydrogen on a Palladium Catalyst 钯催化剂上 2,3,4,5-四溴噻吩与氢的选择性催化加氢脱溴反应

IF 0.7

Catalysis in Industry Pub Date : 2023-12-26 DOI: 10.1134/S2070050423040025

N. A. Alekseeva, V. V. Eremina, S. V. Sysolyatin, I. A. Shchurova

引用次数: 0