Кинетика и катализ最新文献

Catalytic C(sp²)–C(sp³) Cross-Electrophile Coupling in Ptᴵᴵ–NaI–C₂H₃I–CH₃I–acetone System 铂ᴵᴵ-NaI-C₂H₃I-CH₃I-丙酮体系中的催化 C(sp²)-C(sp³)交-亲电偶合反应

Кинетика и катализ Pub Date : 2024-07-17 DOI: 10.31857/s0453881124010045

T. V. Krasnyakova, D. V. Nikitenko, S. Mitchenko

引用次数: 0

New Catalyst Systems for the Polymerization of Norbornene and Its Derivatives Based on Cationic Palladium Cyclopentadienyl Complexes 基于阳离子环戊二烯钯络合物的降冰片烯及其衍生物聚合新催化剂体系

Кинетика и катализ Pub Date : 2024-07-17 DOI: 10.31857/s0453881124010058

D. S. Suslov, M. V. Pakhomova, M. V. Bykov, T. S. Orlov, Z. Abramov, A. V. Suchkova, P. A. Abramov

{"title":"New Catalyst Systems for the Polymerization of Norbornene and Its Derivatives Based on Cationic Palladium Cyclopentadienyl Complexes","authors":"D. S. Suslov, M. V. Pakhomova, M. V. Bykov, T. S. Orlov, Z. Abramov, A. V. Suchkova, P. A. Abramov","doi":"10.31857/s0453881124010058","DOIUrl":"https://doi.org/10.31857/s0453881124010058","url":null,"abstract":"The catalytic properties of systems based on [Pd(Cp)(L)n]m[BF₄]m (where Cp = η5-C5H5; n = 2, m = 1: L = tris(orthomethoxyphenyl)phosphine, triphenylphosphine, tris(2-furyl)phosphine (TFP), n = 1, m = 1: L = 1,1'-bis(diphenylphosphino)ferrocene, 1,3-bis(diphenylphosphino)propane, 1,4-bis(diphenylphosphino)butane, 1,5-bis(diphenylphosphino)pentane; n = 1, m = 2 or 3: L = 1,6-bis(diphenylphosphino)hexane) in the addition homoand copolymerization of norbornene (NB) and its derivatives have been studied. These complexes can be activated with the Lewis-acids (BF₃ ∙ OEt2 or AlCl3). The productivity of the [Pd(Cp)(PPh3)2][BF₄]/BF₃ ∙ OEt2 catalyst system in the polymerization of norbornene is up to 188800 molNB molPd⁻¹. The homopolymerization of 5-methoxycarbonylnorbornene and copolymerization of NB with 5-methoxycarbonylnorbornene or 5-phenylnorbornene were studied in the presence of BF₃ ∙ OEt2 and [Pd(Cp)(L)2][BF₄] (L = PPh3 or TFP). A hypothesis for the catalyst’s formation via the intramolecular rearrangement of the η5-Cp ligand into the η1-Cp form upon interaction with a Lewis acid is suggested. The structure of the [Pd(Cp)(TFP)2]BF₄ (I) was determined by X-ray diffraction. In the crystal structure of I, the palladium coordination sphere is characterized by a slight distortion of the square planar geometry of the central atom, and the cyclopentadiyl fragment is in an eclipsed conformation. Based on the XRD data, the steric hindrance of the TFP ligand was estimated (the cone angle is 149°).","PeriodicalId":300423,"journal":{"name":"Кинетика и катализ","volume":" 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141830526","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

Features of CO₂ Hydrogenation on MoO₃/Al₂O₃ and γ-Al₂O₃ CO₂ 在 MoO₃/Al₂O₃ 和 γ-Al₂O₃ 上氢化的特征

Кинетика и катализ Pub Date : 2024-07-17 DOI: 10.31857/s0453881124010065

M. Kipnis, P. Samokhin, R. S. Galkin, E. Volnina, N. A. Zhilyaeva

{"title":"Features of CO₂ Hydrogenation on MoO₃/Al₂O₃ and γ-Al₂O₃","authors":"M. Kipnis, P. Samokhin, R. S. Galkin, E. Volnina, N. A. Zhilyaeva","doi":"10.31857/s0453881124010065","DOIUrl":"https://doi.org/10.31857/s0453881124010065","url":null,"abstract":"The physicochemical and catalytic (CO₂ hydrogenation) characteristics of Mo-containing catalysts have been studied. Catalysts with an oxide content of Mo 8 and 15 wt% were prepared by impregnation with ammonium paramolybdate γ-Al₂O₃ followed by drying and calcining at 500°C. The introduction of Mo oxide reduces the pore volume of the support and increases their average size, which indicates the distribution of the deposited molybdenum oxide in the pores of the support. According to X-ray diffraction data, the calcined catalyst contains practically no crystalline MoO₃ phase. According to the Raman spectra, oxygen-containing formations are present on the catalyst surface, in which Mo atoms are tetrahedrally and octahedrally coordinated with respect to oxygen atoms. The impregnated MoO₃ oxide is partially reduced by hydrogen during linear heating starting from 320°C. Hydrogenation of CO₂ (gas of composition, vol.%: 30.7 CO₂, 68 H₂, rest. N2, sample 0.5 g) was studied in the mode of linear heating up to 400°C. The main reaction is the reverse reaction of CO steam reforming. The contribution of the methanation reaction to CO₂ hydrogenation is small. An increase in temperature and pressure has a positive effect on CO₂ conversion. With an increase in pressure from 1 to 5 MPa, the CO content increases approximately twofold. In the hydrogenation of CO₂, γ-Al₂O₃, preheated in a flow of H₂ to 400°C, also exhibits noticeable activity, although significantly lower compared to Mo-containing catalysts. With increasing pressure, the activity of aluminium oxide and Mo-containing catalysts, increases.","PeriodicalId":300423,"journal":{"name":"Кинетика и катализ","volume":" 16","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141829690","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

The Influence of Pt Additives on The Activity and Stability of Rh-containing Catalyst Performance in Diesel Fuel Conversion into Syngas 铂添加剂对含 Rh 催化剂在柴油转化为合成气过程中的活性和稳定性的影响

Кинетика и катализ Pub Date : 2024-07-17 DOI: 10.31857/s0453881124010079

V. A. Shilov, M. A. Burmatova, V. D. Belyaev, D. Potemkin, P. Snytnikov

引用次数: 0

Influence of Phosphorus Modifier and Nature of the Support on the Properties of Palladium Catalysts in the Chemoselective Hydrogenation of Acetylenic Compounds 磷改性剂和载体性质对乙炔化合物化学选择性加氢反应中钯催化剂性能的影响

Кинетика и катализ Pub Date : 2024-07-17 DOI: 10.31857/s0453881124010037

L. B. Belykh, T. Sterenchuk, N. Skripov, E. Milenkaya, T. Kornaukhova, S. A. Skornikova, S. S. Kolesnikov, F. Schmidt

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К юбилею Института проблем переработки углеводородов СО РАН (Омск) 到ran碳氢化合物加工研究所周年纪念日

Кинетика и катализ Pub Date : 2018-10-01 DOI: 10.1134/s0453881119020035

Ирина

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Влияние HF-модифицирования на каталитические свойства ферросфер в процессе окислительной конденсации метана HF改造对铁氧体氧化甲烷凝结作用的催化作用

Кинетика и катализ Pub Date : 2018-09-01 DOI: 10.1134/S0453881119020047

Н. П. Кирик, Н. Н. Аншиц, Е В Рабчевский, Л.А. Соловьев, N. Kirik, N. Anshits, E. Rabchevskiĭ, Leonid A. Solovyov

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Кинетическое исследование термического разложения этаноллигнинов пихты и осины

Кинетика и катализ Pub Date : 2018-09-01 DOI: 10.1134/S0453881119030055

Надежда Микова, О. Ю. Фетисова, Е.В. Мазурова, Н.М. Иванченко, М.А. Лутошкин, Л. Дьякович, Н.В. Чесноков, Борис Николаевич Кузнецов, Nadezhda M. Mikova, Olga Yu. Fetisova, Elena V. Mazurova, N. M. Ivanchenko, Maxim A. Lutoschkin, Laurent Djakovitch, N. V. Chesnokov, Boris N. Kuznetsov

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Дизайн и характеризация нанокомпозитных катализаторов трансформации биотоплив в синтез-газ и водород в структурированных реакторах и мембранах 纳米复合催化剂在结构反应堆和细胞膜中转化为聚变气体和氢的设计和特征

Кинетика и катализ Pub Date : 1900-01-01 DOI: 10.1134/s0453881119050095

Владислав Александрович Садыков, М. Н. Симонов, Ю. Н. Беспалко, Л. Н. Боброва, Н. Ф. Еремеев, М.В. Арапова, Е. А. Смаль, Наталія Мезенцева, С. Н. Павлова

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Каталитическое окисление этилена в растворах катионных комплексов палладия(II) в бинарных и тройных водно-органических растворителях 乙烯在二进制和三重有机溶剂(II)溶液中催化氧化

Кинетика и катализ Pub Date : 1900-01-01 DOI: 10.31857/s0453881121060162

И. В. Ошанина, А. В. Подтягина, У. В. Пестунова, И. Н. Руснак, О. Н. Темкин

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