Kataliz v promyshlennosti最新文献_第3页

A bifunctional cobalt catalyst for the synthesis of waxy diesel fuel by the Fischer–Tropsch method – from the development to implementation. Part 3. The experience of industrial implementation of the preparation technology 费托合成法合成蜡质柴油的双功能钴催化剂--从开发到实施。第 3 部分。制备技术的工业应用经验

Kataliz v promyshlennosti Pub Date : 2024-01-23 DOI: 10.18412/1816-0387-2024-1-34-43

G. B. Narochnyi, I. Zubkov, A. Savost’yanov, I. K. Allaguzin, S. A. Lavrenov, R. Yakovenko

{"title":"A bifunctional cobalt catalyst for the synthesis of waxy diesel fuel by the Fischer–Tropsch method – from the development to implementation. Part 3. The experience of industrial implementation of the preparation technology","authors":"G. B. Narochnyi, I. Zubkov, A. Savost’yanov, I. K. Allaguzin, S. A. Lavrenov, R. Yakovenko","doi":"10.18412/1816-0387-2024-1-34-43","DOIUrl":"https://doi.org/10.18412/1816-0387-2024-1-34-43","url":null,"abstract":"The work summarizes the results of testing the technology for preparing a bifunctional cobalt catalyst for the synthesis of hydrocarbons from CO and H2, obtained by extruding a mixture of Co-Al2O3 /SiO2 catalyst powders and HZSM-5 zeolite with a binder – boehmite in industrial conditions (2 batches of 50 kg each were prepared). The catalyst technology was implemented on the equipment of Ishimbay Specialized Chemical Catalyst Plant LLC. The obtained industrial samples of the catalyst were characterized by XRF, TPR H2, DTG, and tested in the synthesis of hydrocarbons from CO and H2 at a temperature of 250 °C, a pressure of 2.0 MPa, GHSV 1000 h–1. It has been shown that the implementation of the technology of a bifunctional cobalt catalyst for the production of low pour point diesel fuel in industrial conditions makes it possible to reproduce the characteristics of the catalyst obtained in laboratory conditions. The technology for producing the catalyst can be recommended for the production of industrial batches. It was determined that changes in the heat treatment conditions of the catalyst, as well as the presence/absence of a peptizer and pore former do not lead to a significant decrease in the productivity of C5+ hydrocarbons. The contentof the diesel fraction in C5+ products obtained from industrial samples of the catalyst remains at the level of the value obtained from the laboratory sample of the catalyst. At the same time, the low-temperature properties of diesel fuel obtained using all catalyst samples have similar values. Using an industrial sample synthesized without the use of a peptizing agent and a pore-forming component, the best lowtemperature properties of diesel fuel were achieved – the cloud point and fluid loss point were minus 16 and minus 24, respectively.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"103 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139605898","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

Synthesis of hydroxylamine sulfate via NO hydrogenation over Pt/Graphite catalysts. Part 3: Functionalization of the support surface and formation of the active component during the catalyst synthesis 在铂/石墨催化剂上通过氮氧化物加氢合成硫酸羟胺。第 3 部分：载体表面的功能化和催化剂合成过程中活性组分的形成

Kataliz v promyshlennosti Pub Date : 2024-01-23 DOI: 10.18412/1816-0387-2024-1-44-59

P. Simonov, A. N. Bobrovskaya, V. A. Bobrin, R. Kvon, A. Bukhtiyarov, N. A. Rudina, A. V. Romanenko

引用次数: 0

Guard of hydrotreating catalysts of oil fractions from solid particulates: experimental studies and calculation 固体颗粒油馏分加氢处理催化剂的防护：实验研究与计算

Kataliz v promyshlennosti Pub Date : 2023-11-23 DOI: 10.18412/1816-0387-2023-6-70-79

I. Mik, O. P. Klenov, M. O. Kazakov, K. Nadeina, O. Klimov, S. I. Reshetnikov, A. Noskov

引用次数: 0

Methods for the synthesis of salicylic acid. A review 合成水杨酸的方法。综述

Kataliz v promyshlennosti Pub Date : 2023-11-23 DOI: 10.18412/1816-0387-2023-6-52-69

E. E. Sergeev, Yulia A. Rodikova, E. G. Zhizhina

引用次数: 0

The influence of chemical composition and preparation procedure on CO2 capture performance of NaNO3 /MgO-based sorbents 化学成分和制备过程对 NaNO3 /MgO 基吸附剂捕获二氧化碳性能的影响

Kataliz v promyshlennosti Pub Date : 2023-11-23 DOI: 10.18412/1816-0387-2023-6-5-16

I. E. Nikulina, V. S. Derevshchikov, V. Pakharukova, D. Potemkin, P. Snytnikov

{"title":"The influence of chemical composition and preparation procedure on CO2 capture performance of NaNO3 /MgO-based sorbents","authors":"I. E. Nikulina, V. S. Derevshchikov, V. Pakharukova, D. Potemkin, P. Snytnikov","doi":"10.18412/1816-0387-2023-6-5-16","DOIUrl":"https://doi.org/10.18412/1816-0387-2023-6-5-16","url":null,"abstract":"MgO based sorbents modified by 5–50 mol.% NaNO3 have been prepared by various methods and investigated in detail. It has been showed that optimal synthesis method is incipient wetness impregnation of MgO precursor with sodium nitrate water solution. The highest sorption capacity of 6.5 mmol CO2 g–1 sorb after 1 hour of sorption from the gas mixture with 50 vol.% CO2 at 320 °C was achieved using the MgO modified by 10 mol.% NaNO3. Sorption capacity for MgO modified by 10 mol.% NaNO3 during 10 consecutive sorption-desorption cycles is approximately 4.5–5.5 mmol CO2 g–1 sorb. The duration of the sorption stage is 30 min, the CO2 content in the feed gas is 50 vol.% and sorption-regeneration temperature is 300–350 °C respectively. It has been showed that increasing the sorption pressure to 10 bar allows reducing sorption temperature from 320 °C to 220–260 °C. The sorption capacity is reached up to 4.0 mmol CO2 g–1 sorb at 25 vol.% CO2 that is twice higher than that at 1 bar. It has been demonstrated that steam and hydrogen treatment before sorption doesn’t lead to a significant change in the sorption properties and phase composition of NaNO3 modified MgO-based sorbent.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"27 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139246534","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

Efficient catalysts based on substitutional solid solutions and intermetallic compounds of palladium for acetylene selective hydrogenation to ethylene 基于钯的置换固溶体和金属间化合物的乙炔选择性加氢制乙烯高效催化剂

Kataliz v promyshlennosti Pub Date : 2023-11-23 DOI: 10.18412/1816-0387-2023-6-17-51

D. A. Shlyapin, D. Yurpalova, T. Afonasenko, V. Temerev, A. V. Lavrenov

{"title":"Efficient catalysts based on substitutional solid solutions and intermetallic compounds of palladium for acetylene selective hydrogenation to ethylene","authors":"D. A. Shlyapin, D. Yurpalova, T. Afonasenko, V. Temerev, A. V. Lavrenov","doi":"10.18412/1816-0387-2023-6-17-51","DOIUrl":"https://doi.org/10.18412/1816-0387-2023-6-17-51","url":null,"abstract":"The features of the catalytic action of bimetals such as Pd-Ag, Pd-Cu, Pd-Au, Pd-Ga, Pd-Zn on the conversion of acetylene to ethylene are considered. Two factors that determine the influence of the second metal on palladium – the ensemble effect (geometric effect) and the ligand effect (electronic effect) were taken into account. The relationship between the parameters obtained using calculation methods and experimentally established characteristics are shown. The calculated parameters are thermodynamic and kinetic parameters of the adsorption interaction of the main components of the reaction medium and intermediates with the catalyst surface, the structure of active ensembles and the experimental ones are the structural parameters of bimetallic phases, the electronic state of their components, and catalytic properties of bimetals. The examples illustrating the possibility of the modifier atoms entering into active ensembles and the participation of the sites formed from modifier atoms in the catalysis of individual elementary stages are presented.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"82 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-11-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139245895","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 over zeolite-containing catalysts 乙醇在含沸石催化剂上催化转化为芳香烃

Kataliz v promyshlennosti Pub Date : 2023-09-08 DOI: 10.18412/1816-0387-2023-4-45-64

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

引用次数: 0

Catalytic hydrogenation of CO2 as a method for obtaining valuable chemical products 二氧化碳催化加氢作为一种获得有价值化工产品的方法

Kataliz v promyshlennosti Pub Date : 2023-09-08 DOI: 10.18412/1816-0387-2023-4-6-32

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

引用次数: 0

Biocatalytic transformation of semi-finished hardwood into sugars – carrying out the process of enzymatic hydrolysis at a high concentration of substrate 半成品硬木的生物催化转化成糖-在高浓度的底物下进行酶水解的过程

Kataliz v promyshlennosti Pub Date : 2023-09-08 DOI: 10.18412/1816-0387-2023-4-75-83

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

{"title":"Biocatalytic transformation of semi-finished hardwood into sugars – carrying out the process of enzymatic hydrolysis at a high concentration of substrate","authors":"M. Semenova, V. D. Telitsin, A. Rozhkova, E. A. Kondratieva, I. Shashkov, A. D. Satrutdinov, Ya. A. Gareeva, V. G. Moseev, A. M. Kryazhev, A. P. Sinitsyn","doi":"10.18412/1816-0387-2023-4-75-83","DOIUrl":"https://doi.org/10.18412/1816-0387-2023-4-75-83","url":null,"abstract":"The possibility of exhaustive enzymatic hydrolysis of semi-bleached sulfate hardwood pulp, a semi-finished product of pulp and paper production, at its super high concentrations in the reaction mixture (up to 300 g/l) is shown. For hydrolysis, Russian commercial enzyme preparations were used, the best of them was Agroxyl Plus, which has a high activity of cellulases and endoxylanase. With the help of Agroxyl Plus (at its dosage of 20 mg protein/g substrate) in the presence of an auxiliary enzyme preparation of β-glucosidase (2 mg protein/g substrate) at an initial concentration of semi-bleached cellulose of 300 g/l, 290 g/l sugars (210 g/l glucose, 30 g/l xylose) were obtained. Due to fed-batch enzymatic hydrolysis, it was possible to halve the dosage of Agroxyl Plus (10 mg protein/g of substrate at a total concentration of semi-bleached cellulose of 300 g/l) while maintaining a high yield of hydrolysis products – 270 g/l sugars (200 g/l glucose, 30 g/l xylose).","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"7 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89960297","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

Ru-bentonite catalyzed green Knoevenagel condensation of substituted benzaldehydes with ethyl cyanoacetate 钌膨润土催化取代苯甲醛与氰乙酸乙酯的绿色Knoevenagel缩合反应

Kataliz v promyshlennosti Pub Date : 2023-09-08 DOI: 10.18412/1816-0387-2023-4-33

Debasis Borah, Deepmoni Brahma, Dipanwita Basak, Hemaprobha Saikia

{"title":"Ru-bentonite catalyzed green Knoevenagel condensation of substituted benzaldehydes with ethyl cyanoacetate","authors":"Debasis Borah, Deepmoni Brahma, Dipanwita Basak, Hemaprobha Saikia","doi":"10.18412/1816-0387-2023-4-33","DOIUrl":"https://doi.org/10.18412/1816-0387-2023-4-33","url":null,"abstract":"The full-text of the article will be published in the English version of the journal \"Catalysis in Industry\" No. 1, 2024.To develop Ru-incorporated bentonite clay as a heterogeneous base catalyst for use in Knoevenagel condensation as an alternative to hazardous base catalysts like pyridine, piperidine, etc., we purify the naturally occurring bentonite clay and Ru3+ cation incorporated into its interlayers of bentonite clay to improve its porosity and to increase the surface area of bentonite clay. Purified bentonite and Ru-bentonite were characterized by FTIR, PXRD, HRTEM, SEM & EDS, BET surface area analysis, and TGA. Base activation was done to these clays and a comparative study of these clays as recyclable heterogeneous catalysts for Knoevenagel Condensation was undertaken in water as a solvent for the chemical transformation of 2,4-dichlorobenzaldehyde and 4-hydroxybenzaldehyde with ethyl cyanoacetate into their corresponding α,β-unsaturated acids. The products were characterized by FTIR, 1H NMR, and 13C NMR analyses. The essential key points of this reaction are mild reaction conditions, absence of hazardous chemicals as used in classical Knoevenagel condensation, reusability of the catalyst, and high yield percentage of the products.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":"93 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-09-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72674708","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