Petroleum Chemistry最新文献

A Novel Approach to the Extraction of Clusters from ZSM-5 Zeolite for Quantum-Chemical Search for Zn2+ Cation-Exchange Sites 一种从ZSM-5沸石中提取团簇的新方法用于Zn2+阳离子交换位的量子化学搜索

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-12-27 DOI: 10.1134/S0965544124080012

V. A. Koveza, A. S. Giliazutdinova, O. V. Potapenko

引用次数: 0

Identification of Signals from Individual Crystallographic T-Sites of HBEA Zeolite Framework in 27Al MAS NMR Spectra 27Al - MAS核磁共振光谱中HBEA分子筛框架单个晶体t位信号的识别

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-12-26 DOI: 10.1134/S0965544124080024

I. A. Kostyukov, Yu. G. Kolyagin, A. A. Rybakov, A. V. Larin, I. I. Ivanova

引用次数: 0

Physical-Chemical and Catalytic Properties of MEL and MFI Zeolites Obtained by Steam-Assisted Crystallization 蒸汽辅助结晶制备MEL和MFI沸石的理化性质和催化性能

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-12-26 DOI: 10.1134/S0965544124070077

V. A. Vorobkalo, A. G. Popov, A. V. Efimov, D. O. Bachurina, A. I. Nikiforov, I. I. Ivanova

{"title":"Physical-Chemical and Catalytic Properties of MEL and MFI Zeolites Obtained by Steam-Assisted Crystallization","authors":"V. A. Vorobkalo, A. G. Popov, A. V. Efimov, D. O. Bachurina, A. I. Nikiforov, I. I. Ivanova","doi":"10.1134/S0965544124070077","DOIUrl":"10.1134/S0965544124070077","url":null,"abstract":"Two series of zeolites, vis., the MEL and MFI types, with different Si/Al molar ratios were synthesized by a steam-assisted crystallization method, specifically dry gel conversion (DGC). Their physicochemical properties were characterized by low-temperature nitrogen adsorption, scanning electron microscopy, and X-ray fluorescence analysis. The acidic properties were examined by IR spectroscopy of adsorbed pyridine and 2,6-di-tert-butylpyridine as well as by ammonia temperature-programmed desorption. The DGC-synthesized zeolites were distinguished by high crystallinity, small crystal size, and well-developed surface. All the samples exhibited high activity and deactivation resistance in the oligomerization of a butane–butylene fraction. A comparative assessment of the catalytic performance the MEL and MFI samples demonstrated that the structural difference between the MEL and MFI types barely affects their deactivation resistance. Therefore, MEL zeolite is a valid alternative to the MFI type in the development of oligomerization catalysts.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 9","pages":"1070 - 1078"},"PeriodicalIF":1.3,"publicationDate":"2024-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889907","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Catalytic Cracking of n-Dodecane over P-Modified MFI Zeolites Synthesized by Steam-Assisted Conversion: Effect of SiO2/Al2O3 Ratio 蒸汽催化合成p改性MFI沸石上正十二烷的催化裂化：SiO2/Al2O3的影响

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0965544124060203

D. O. Bachurina, A. S. Giliazutdinova, O. V. Potapenko, I. I. Ivanova

{"title":"Catalytic Cracking of n-Dodecane over P-Modified MFI Zeolites Synthesized by Steam-Assisted Conversion: Effect of SiO2/Al2O3 Ratio","authors":"D. O. Bachurina, A. S. Giliazutdinova, O. V. Potapenko, I. I. Ivanova","doi":"10.1134/S0965544124060203","DOIUrl":"10.1134/S0965544124060203","url":null,"abstract":"The paper describes the physicochemical characterization and catalytic testing of MFI zeolites with different SiO2/Al2O3 ratios synthesized by steam-assisted crystallization (SAC) and modified with phosphorus (4 wt % loading). Their physicochemical properties were characterized by X-ray diffraction analysis, X-ray fluorescence analysis, scanning electron microscopy, low-temperature nitrogen adsorption, ammonia temperature-programmed desorption, and MAS NMR spectroscopy. Both the parent and P-modified MFI zeolites were then subjected to catalytic tests in cracking of n-dodecane. The yield of light olefins was enhanced only in two cases: when MFI zeolites with SiO2/Al2O3 ratios of 30–70 were modified with 4 wt % phosphorus and when parent MFI zeolites with SiO2/Al2O3 ratios of 100–220 were used. It was further found that, in terms of catalytic performance in the cracking of n-dodecane, the MFI zeolites synthesized by SAC were comparable to a commercially available MFI zeolite synthesized under hydrothermal conditions. Moreover, in contrast to the commercially available zeolite, phosphorus modification of the SAC-synthesized zeolite enhanced the yield of C2–C4 olefins.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 9","pages":"1096 - 1105"},"PeriodicalIF":1.3,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889974","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Hydrocracking of n-Hexadecane and Diesel Fuels over Bifunctional Catalysts based on High-Crystallinity Granulated Hierarchical ZSM-5 Zeolites 基于高结晶度粒状分级ZSM-5沸石的正十六烷和柴油加氢裂化双功能催化剂

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0965544124070065

O. S. Travkina, R. E. Yakovenko, D. V. Serebrennikov, A. Kh. Ishkildina, I. N. Zubkov, B. I. Kutepov, M. R. Agliullin

引用次数: 0

Catalytic Cracking of n-Dodecane over Alkali-Metal-Modified ZSM-5 Zeolites 正十二烷在碱金属改性ZSM-5沸石上的催化裂化

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-12-19 DOI: 10.1134/S0965544124080036

A. S. Giliazutdinova, T. P. Sorokina, O. V. Potapenko, V. P. Doronin, D. N. Ogurtsova, V. A. Koveza

引用次数: 0

Influence of Al2O3 Content in Pelletized SAPO-11 Molecular Sieves on Their Physicochemical Properties, Activity, and Selectivity in Hydroisomerization of n-Hexadecane 球团状SAPO-11分子筛中Al2O3含量对其理化性质、活性和正十六烷加氢异构化选择性的影响

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-12-03 DOI: 10.1134/S0965544124060197

D. V. Serebrennikov, A. R. Zabirov, R. Z. Kuvatova, D. O. Bagdanova, A. I. Malunov, O. S. Travkina, B. I. Kutepov, M. R. Agliullin

引用次数: 0

Effects of Synthesis Method on the Physicochemical Properties and Catalytic Activity of BEA Zeolite in Toluene Disproportionation 合成方法对BEA沸石甲苯歧化理化性质及催化活性的影响

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-10-30 DOI: 10.1134/S096554412406001X

O. A. Ponomareva, E. P. Andriako, A. P. Dubtsova, N. K. Vdovchenko, V. A. Vorobkalo, I. V. Dobryakova, L. I. Rodionova, O. V. Shutkina, I. I. Ivanova

引用次数: 0

Template-Free Synthesis of ZSM-5: Effect of Precursor Composition on the Crystallinity and Crystal Morphology ZSM-5的无模板合成：前驱体组成对结晶度和晶体形态的影响

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-10-30 DOI: 10.1134/S0965544124060033

A. A. Bragina, K. A. Babina, A. V. Kasyanov, E. V. Parkhomchuk

{"title":"Template-Free Synthesis of ZSM-5: Effect of Precursor Composition on the Crystallinity and Crystal Morphology","authors":"A. A. Bragina, K. A. Babina, A. V. Kasyanov, E. V. Parkhomchuk","doi":"10.1134/S0965544124060033","DOIUrl":"10.1134/S0965544124060033","url":null,"abstract":"A series of ZSM-5 samples were synthesized by template-free hydrothermal synthesis without adding seed crystals. When synthesis parameters such as temperature, duration, and molar ratio of components being equal, various silicas (specifically, Silica-Fumed from Sigma-Aldrich; Rosil-175 from the Bashkir Soda Company (BSC), Russia; Silica from the Salavat Catalyst Plant (SCP), Russia; and Aerosil-300 from Evonik, Germany) and of aluminum (Al(NO3)3∙9H2O and NaAlO2) were varied. In the presence of sodium aluminate, highly crystalline ZSM-5 samples were synthesized, whereas the use of aluminum nitrate led to an amorphous product due to accelerating aluminosilicate condensation. The ZSM-5 crystals prepared from various SiO2 sources have different morphology, including the crystal size (ranging from 5.9 to 12.2 µm) and the aspect ratio (from 1.9 to 2.6). The ZSM-5 samples synthesized from available Russian-manufactured SiO2 sources (Rosil-175 (BSC) and Silica (SCP)) in the presence of sodium aluminate consisted of crystals with average sizes of 5.9 and 6.9 μm, respectively, and a narrow particle size distribution (cv < 20%).","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 9","pages":"1063 - 1069"},"PeriodicalIF":1.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889774","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Catalytic Activity of Tandem Catalysts Based on ZnGa2O4 and MFI Zeolite in CO2 Hydrogenation ZnGa2O4 - MFI分子筛串联催化剂在CO2加氢中的催化活性

IF 1.3 4区工程技术

Petroleum Chemistry Pub Date : 2024-10-30 DOI: 10.1134/S0965544124060070

G. K. Ivanov, A. A. Maerle, D. O. Bachurina, I. V. Dobryakova, I. I. Ivanova

{"title":"Catalytic Activity of Tandem Catalysts Based on ZnGa2O4 and MFI Zeolite in CO2 Hydrogenation","authors":"G. K. Ivanov, A. A. Maerle, D. O. Bachurina, I. V. Dobryakova, I. I. Ivanova","doi":"10.1134/S0965544124060070","DOIUrl":"10.1134/S0965544124060070","url":null,"abstract":"A series of tandem catalysts based on a ZnGa2O4 spinel and on MFI-type acidic components with varying SiO2/Al2O3 ratios were prepared by mechanical mixing at a spinel to MFI weight ratio of 2 : 1. These catalysts were tested in the conversion of carbon dioxide to olefins at 380°C and 27 bar. The hydrogenating component (ZnGa2O4) was prepared by co-precipitation of the corresponding hydroxides followed by heat treatment. The zeolites were synthesized by steam-assisted crystallization. A reference catalyst was prepared from ZnGa2O4 and a hydrothermally synthesized commercial zeolite CBV28014. The physicochemical properties of the catalysts and their components were characterized by low-temperature nitrogen adsorption–desorption, chemical analysis, NH3-TPD, H2-TPR, XRD, and SEM. The sample with the highest SiO2/Al2O3 ratio (250) achieved the highest CO2 conversion; this parameter dropped as the aluminum content in the samples increased. The highest selectivity towards light olefins was observed for the catalyst with SiO2/Al2O3 = 172 in the acidic component, likely because this zeolite had an optimum acidity for the production of light olefins.","PeriodicalId":725,"journal":{"name":"Petroleum Chemistry","volume":"64 9","pages":"1138 - 1146"},"PeriodicalIF":1.3,"publicationDate":"2024-10-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142889777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0