Kataliz v promyshlennosti最新文献_第2页

Nickel-containing catalysts for ethylene conversion to motor fuel components and light alkenes 将乙烯转化为汽车燃料成分和轻烯的含镍催化剂

Kataliz v promyshlennosti Pub Date : 2024-03-20 DOI: 10.18412/1816-0387-2024-2-26-33

T. R. Karpova, A. V. Lavrenov, M. Moiseenko, E. A. Buluchevskii, T. Gulyaeva, A. Arbuzov

引用次数: 0

Study of the influence of the gas circulation ratio on the production of C5–C18 alkenes in the Fischer–Tropsch synthesis 研究气体循环比对费托合成生产 C5-C18 烯烃的影响

Kataliz v promyshlennosti Pub Date : 2024-03-20 DOI: 10.18412/1816-0387-2024-2-34-42

I. Zubkov, O. D. Denisov, M. A. Timokhina, A. Savost’yanov, R. Yakovenko

{"title":"Study of the influence of the gas circulation ratio on the production of C5–C18 alkenes in the Fischer–Tropsch synthesis","authors":"I. Zubkov, O. D. Denisov, M. A. Timokhina, A. Savost’yanov, R. Yakovenko","doi":"10.18412/1816-0387-2024-2-34-42","DOIUrl":"https://doi.org/10.18412/1816-0387-2024-2-34-42","url":null,"abstract":"The process of producing C5+ hydrocarbons, including unsaturated ones, on a zeolite-containing catalyst Сo-Al2O3 /SiO2 /ZSM-5/Al2O3 in flow and flow-circulation modes of operation at a temperature of 250 °C, a pressure of 2.0 MPa, GHSV 1000 h–1 has been studied , H2 /CO ratio = 1.70 in the source gas and circulation ratios of 4, 8 and 16. It was determined that the process indicators (selectivity and productivity for C5+ products) pass through a maximum at a circulation ratio of 8. The use of gas circulation in comparison with flow synthesis mode allows you to regulate the composition of products. An increase in the circulation ratio in the range of 4–16 leads to an increase in the proportion of formed olefins with a hydrocarbon chain length containing 5–20 carbon atoms, from 53.9 wt.% up to 65.7 wt.%. The use of a zeolite-containing catalyst intensifies the formation of C8–C12 alkenes in comparison with the Co-Al2O3 /SiO2 catalyst by 3,3 times – the content increases from 13,5 wt.% up to 44.2 wt.% at similar values of circulation ratio, pressure and H2 /CO ratio = 1.70 in the source gas. It was found that as the circulation ratio increases, the rate of deactivation of the zeolite-containing catalyst decreases, which may be caused by a decrease in the partial pressure of water in the reaction volume.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140225313","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

Variation of the shapes of catalytic blocks in the autothermal reforming of hexadecane, propane and methane using mathematical modeling 利用数学建模改变十六烷、丙烷和甲烷自热转化过程中催化块的形状

Kataliz v promyshlennosti Pub Date : 2024-03-20 DOI: 10.18412/1816-0387-2024-2-51-58

S. Zazhigalov, V. A. Shilov, A. Zagoruiko, P. Snytnikov

引用次数: 0

The use of microalgae biomass for the production of marketable products. Part 6: Bioplastic from microalgae 利用微藻生物质生产适销产品。第 6 部分：微藻生物塑料

Kataliz v promyshlennosti Pub Date : 2024-03-20 DOI: 10.18412/1816-0387-2024-2-76-84

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

引用次数: 0

Industrial aluminum hydroxides: Part 1. Phase composition and textural characteristics of industrial aluminum hydroxides/oxides 工业氢氧化铝：第 1 部分。工业氢氧化铝/氧化物的相组成和纹理特征

Kataliz v promyshlennosti Pub Date : 2024-03-20 DOI: 10.18412/1816-0387-2024-2-6-14

A. P. Bebyakina, M. I. Farid, A. Boretskaya, S. Egorova, A. Lamberov

{"title":"Industrial aluminum hydroxides: Part 1. Phase composition and textural characteristics of industrial aluminum hydroxides/oxides","authors":"A. P. Bebyakina, M. I. Farid, A. Boretskaya, S. Egorova, A. Lamberov","doi":"10.18412/1816-0387-2024-2-6-14","DOIUrl":"https://doi.org/10.18412/1816-0387-2024-2-6-14","url":null,"abstract":"The most common component in the design of heterogeneous catalysts for oil refining and petrochemistry are aluminum oxides. Each type of hydrocarbon raw materials and technological process corresponds to the optimal characteristics of aluminum oxide supports and catalysts: specific surface area, pore size, phase and impurity compositions. Due to the trend towards import substitution, the research of domestic producers of aluminum hydroxide used for the synthesis of aluminum oxides is becoming more relevant. In this work, domestic industrial samples of aluminum hydroxides were studied by methods of X-ray phase analysis, thermogravimetry combined with differential scanning calorimetry, low-temperature nitrogen adsorption and elemental analysis. It is established that the objects of research are most often phase-inhomogeneous, in which impurities of iron, silicon and calcium are present. The influence of the degree of crystallization and the size of the coherent scattering regions of aluminum hydroxides, mainly with the structure of boehmite and, in some cases, containing bayerite, on the textural characteristics of the resulting aluminum oxides is shown.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-03-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140226740","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

Co and Ni-containing catalysts for heavy oil refining: the effect of ethanol on the composition and structure of catalytic cracking products 用于重油炼制的含钴和含镍催化剂：乙醇对催化裂化产品成分和结构的影响

Kataliz v promyshlennosti Pub Date : 2024-03-20 DOI: 10.18412/1816-0387-2024-2-59-65

K. K. Urazov, N. Sviridenko, N. S. Sergeev, A. S. Akimov, V. D. Ogorodnikov

引用次数: 0

Experimental studies and mathematical modeling of the catalytic conversion of biodiesel fuel into synthesis gas 生物柴油燃料催化转化为合成气的实验研究和数学建模

Kataliz v promyshlennosti Pub Date : 2024-03-20 DOI: 10.18412/1816-0387-2024-2-43-50

V. A. Shilov, S. Zazhigalov, M. A. Burmatova, A. Zagoruiko, P. Snytnikov

引用次数: 0

Oxidative chlorination of hydrocarbons. Part 1. The Deacon reaction. Oxidative chlorination of saturated hydrocarbons C1 and C2 碳氢化合物的氧化氯化。第 1 部分。迪肯反应。饱和碳氢化合物 C1 和 C2 的氧化氯化反应

Kataliz v promyshlennosti Pub Date : 2024-01-23 DOI: 10.18412/1816-0387-2024-1-5-33

M. Flid

引用次数: 0

Photocatalytic oxidation of model organic dyes in the presence of Na+, NO2–, NO3– ions: theoretical and applied aspects 模型有机染料在 Na+、NO2-、NO3- 离子存在下的光催化氧化：理论与应用问题

Kataliz v promyshlennosti Pub Date : 2024-01-23 DOI: 10.18412/1816-0387-2024-1-69-82

A. V. Zaitsev, V. P. Shesterkin, E. A. Kirichenko, M. S. Kruglov

{"title":"Photocatalytic oxidation of model organic dyes in the presence of Na+, NO2–, NO3– ions: theoretical and applied aspects","authors":"A. V. Zaitsev, V. P. Shesterkin, E. A. Kirichenko, M. S. Kruglov","doi":"10.18412/1816-0387-2024-1-69-82","DOIUrl":"https://doi.org/10.18412/1816-0387-2024-1-69-82","url":null,"abstract":"The influence of the concentration of Na+, NO2–, NO3– ions on the rate of photocatalytic oxidation of model organic dyes was studied in the article: cationic – methylene blue (MB); anionic – methyl orange (MO). Based on studies of hydrochemical indicators of polluted rivers in urban areas (Khabarovsk, Russia) in the period from 1999 to 2019, it was shown that the concentration of ions varies in the ranges: 0.005–0.7 mg/l for NO2–; 0.05–15 mg/l for NO3–; 13–180 mg/l for Na+. Optical spectrophotometry was used to study the kinetics of photooxidation of MC and MO in the concentration ranges of the studied ions: 0–1–10–100–1000–10000 mg/l using P25 titanium oxide as a photocatalyst. The photooxidation time (t) was estimated at various values of the degree of transformation (α) of dyes at: initial – 10 %t; medium – 50 %t; final – 90 %t stages of the photocatalytic process. The effect of absorption of light quanta with wavelengths of 200–350 nm by Na+/NO2– and Na+/NO3– ions is shown depending on the concentrations of these ions in the photocatalytic solution. Recommendations for practical applications of the method of photocatalytic water purification of real polluted waters are given, showing the need to take into account the concentration of the studied ions. A description of the observed effect of ions on the rate of photocatalytic oxidation of model organic dyes is proposed from the point of view of the band structure of semiconductors, elements of the theory of electrolytic dissociation and recombination of free radicals in photocatalytic processes.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2024-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139605393","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

Microwave-assisted synthesis of solketal from glycerol and acetone 微波辅助从甘油和丙酮中合成索酮醛

Kataliz v promyshlennosti Pub Date : 2024-01-23 DOI: 10.18412/1816-0387-2024-1-60-68

V. A. Bolotov, A. E. Kibilyuk, V. N. Parmon, V. N. Panchenko, M. Timofeeva

引用次数: 0