Kataliz v promyshlennosti最新文献_第6页

Structural and Catalytic Properties of the Binary Systems Alumina – Amorphous Aluminosilicate 氧化铝-非晶硅酸铝二元体系的结构与催化性能

Kataliz v promyshlennosti Pub Date : 2023-01-16 DOI: 10.18412/1816-0387-2023-1-6-14

V. Doronin, T. V. Bobkova, T. P. Sorokina, O. Potapenko, A. S. Yurtaeva, N. N. Leontieva, T. Gulyaeva

引用次数: 0

Development of the Method and Technique to Analyze Acetone Hydrogenation Products by Gas Chromatography 丙酮加氢产物气相色谱分析方法与技术的发展

Kataliz v promyshlennosti Pub Date : 2023-01-16 DOI: 10.18412/1816-0387-2023-1-29-36

E. Yakovleva, Mural Nurbol, G. A. Bukhtiyarova

引用次数: 0

Solid-Phase Synthesis of Nickel-Molybdenum Catalysts for Metathesis of Propylene under Mechanical Action 机械作用下丙烯还原反应镍钼催化剂的固相合成

Kataliz v promyshlennosti Pub Date : 2022-12-01 DOI: 10.18412/1816-0387-2022-6-41-50

O. A. Knyazheva, O. N. Baklanova, E. A. Buluchevskiy, A. Arbuzov, M. V. Trenikhin, Т. Р. Karpova, M. Moiseenko, N. N. Leontieva, A. V. Lavrenov

{"title":"Solid-Phase Synthesis of Nickel-Molybdenum Catalysts for Metathesis of Propylene under Mechanical Action","authors":"O. A. Knyazheva, O. N. Baklanova, E. A. Buluchevskiy, A. Arbuzov, M. V. Trenikhin, Т. Р. Karpova, M. Moiseenko, N. N. Leontieva, A. V. Lavrenov","doi":"10.18412/1816-0387-2022-6-41-50","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-6-41-50","url":null,"abstract":"The solid-phase synthesis of model aluminum-molybdenum (Al-Mo) and aluminum-nickel-molybdenum (Al-Ni-Mo) compositions constituting the catalysts for metathesis of propylene was carried out under mechanical action. The structure of model Al-Mo and Al-Ni-Mo compositions was studied using X-ray diffraction analysis, high-resolution transmission electron microscopy, infrared spectroscopy, and diffuse reflectance electron spectroscopy (UV-vis DRS). The latter method revealed the presence of isolated monomeric and oligomeric molybdate compounds in the model Al-Ni-Mo compositions. Granulated catalysts for metathesis were obtained by molding the model Al-Mo and Al-Ni-Mo compositions with aluminum hydroxide followed by calcination. Most active in the metathesis of propylene was the aluminum-molybdenum catalyst containing 2.6 wt.% Ni, 13.0 wt.% Mo and 32.7 wt.% Al. At the process temperature of 200 °С, pressure 0.1 MPa, and weight space velocity of propylene 1 h–1, the conversion of propylene on this catalyst reached 33.7 %, which makes the catalyst promising for practical application. Therewith, the weight fraction of ethylene in the reaction products was 17.5 %, and butenes – 71.3 %.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77953454","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 Role of Interstitial Solid Solutions in the Formation of Active Component in Supported Palladium Catalysts for Selective Hydrogenation of Acetylene to Ethylene 间隙固溶体在乙炔选择性加氢制乙烯负载型钯催化剂中活性组分形成中的作用

Kataliz v promyshlennosti Pub Date : 2022-12-01 DOI: 10.18412/1816-0387-2022-6-51-67

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

引用次数: 1

Spherical TiO2 /Cr2O3 Composites Synthesized Using Ion-Exchange Resins as a Template 以离子交换树脂为模板制备球形TiO2 /Cr2O3复合材料

Kataliz v promyshlennosti Pub Date : 2022-12-01 DOI: 10.18412/1816-0387-2022-6-68-77

A. A. Buzaev, A. Rogacheva, T. Larina, E. V. Dokuchits, O. Khalipova, V. V. Zharkova

{"title":"Spherical TiO2 /Cr2O3 Composites Synthesized Using Ion-Exchange Resins as a Template","authors":"A. A. Buzaev, A. Rogacheva, T. Larina, E. V. Dokuchits, O. Khalipova, V. V. Zharkova","doi":"10.18412/1816-0387-2022-6-68-77","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-6-68-77","url":null,"abstract":"Two samples of TiO2 /Cr2O3 composites were synthesized as spherical grains by stepwise thermal treatment of ion-exchange resins, which were preliminarily saturated with chromium cations Cr3+ and dichromate anions Cr2O7 2– and covered with a film-forming solution of titania. The modes of calcination were based on thermal analysis and determined by the type of ion-exchange resin chosen as a template. The obtained composites consist mostly of the α-Cr2O3 phase, while the content of the TiO2 phase does not exceed 4 %. The composites retain the spherical grain shape of the initial ion-exchange resins with the size from 370 to 660 μm. Grains of the sample based on cationite, which adsorbs Cr3+ ions, have a pore structure with swells and voids. Grains of the sample based on anionite have fractures and cracks over the entire surface due to nonuniform distribution of adsorbed Cr2O72– anions in the initial anionite. The composites exhibit the catalytic activity in the complete oxidation of p-xylene. The sample based on cationite is more active. This may be related to a smaller accessible specific surface area of titania in the anionite-based sample due to formation of the Ti3+ solid solution in α-Cr2O3.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80703632","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

Simultaneous Isomerization of Hexane and Heptane in the Presence of Pt-Containing Tungstated Zirconia Catalysts 含pt钨氧化锆催化剂存在下己烷和庚烷的同时异构化

Kataliz v promyshlennosti Pub Date : 2022-11-28 DOI: 10.18412/1816-0387-2022-6-30-40

M. Smolikov, V. Shkurenok, L. I. Bikmetova, N. N. Leontieva, A. V. Lavrenov

引用次数: 0

Silica Gel as a Sorbent and Catalyst Support: the Improvement of Technologies and the Search for Alternative Production Routes 作为吸附剂和催化剂载体的硅胶:技术改进和寻找替代生产路线

Kataliz v promyshlennosti Pub Date : 2022-11-28 DOI: 10.18412/1816-0387-2022-6-6-15

G. Mamontov, E. Evdokimova, A. S. Savelyeva, A. Zubkov, N. Mikheeva, I. Mazov, A. Knyazev

引用次数: 0

Features of Deactivation and Regeneration of the Zeolite-Containing Cobalt Catalyst in a Fischer – Tropsch Synthesis Reactor 含钴沸石催化剂在费托合成反应器中的失活与再生特征

Kataliz v promyshlennosti Pub Date : 2022-11-28 DOI: 10.18412/1816-0387-2022-6-16-29

A. Gorshkov, L. V. Sineva, K. Gryaznov, E. Asalieva, V. Mordkovich

引用次数: 0

New Ways for Controlling the Molecular-Weight Characteristics and Branching Distribution in Polyethylene Obtained over Supported Catalysts Containing Bis(imino)pyridyl Complexes of Fe(II) and Bis(imine) Complexes of Ni(II) 负载型铁(II)双(亚胺)吡啶配合物和镍(II)双(亚胺)配合物催化剂控制聚乙烯分子量特性和支链分布的新方法

Kataliz v promyshlennosti Pub Date : 2022-09-29 DOI: 10.18412/1816-0387-2022-5-27-39

M. A. Matsko, N. V. Semikolenova, V. Zakharov

{"title":"New Ways for Controlling the Molecular-Weight Characteristics and Branching Distribution in Polyethylene Obtained over Supported Catalysts Containing Bis(imino)pyridyl Complexes of Fe(II) and Bis(imine) Complexes of Ni(II)","authors":"M. A. Matsko, N. V. Semikolenova, V. Zakharov","doi":"10.18412/1816-0387-2022-5-27-39","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-5-27-39","url":null,"abstract":"The paper describes ways for controlling the molecular structure of polyethylene (PE) produced over supported catalysts containing bis(imino)pyridyl complexes of Fe(II) (LFeCl2) and bis(imine) complexes of Ni(II) (*LFeCl2), which are anchored on silica gel modified by the introduction of alumina (SiO2(Al)). Under variation of polymerization conditions over LFeCl2 /SiO2(Al) catalysts, linear PE with different molecular weight and controllable molecular-weight distribution (MWD) was obtained. Homopolymerization of ethylene over *LNiBr2 /SiO2(Al) catalysts led to the formation of branched PE with the molecular-weight and thermophysical characteristics close to the low-density polyethylene produced by ethylene copolymerization with α-olefins over supported metallocene catalysts and supported Zieglertype catalysts. A method was proposed for constructing the supported bicomponent catalysts containing LFeCl2 and *LNiBr2 complexes anchored on the SiO2(Al) support for the deliberate production of polyethylene with the required molecular structure. There are examples of obtaining the linear PE with bimodal MWD on a bicomponent supported catalyst containing two different LFeCl2 complexes, the PE with controllable branching distribution on a bicomponent catalyst synthesized by anchoring LFeCl2 and *LNiBr2 complexes on the SiO2(Al) support, and an example of modifying the industrial chromium oxide catalyst by introducing the LFeCl2 complex for the control of MWD and branching distribution in the produced polyethylene.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83122412","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

Regularities in the Simultaneous Conversion of Phenol and Tetralin During Catalytic Cracking 催化裂化过程中苯酚与四氢萘同时转化的规律

Kataliz v promyshlennosti Pub Date : 2022-09-29 DOI: 10.18412/1816-0387-2022-5-53-60

P. Lipin, V. Doronin, O. Potapenko, T. P. Sorokina

{"title":"Regularities in the Simultaneous Conversion of Phenol and Tetralin During Catalytic Cracking","authors":"P. Lipin, V. Doronin, O. Potapenko, T. P. Sorokina","doi":"10.18412/1816-0387-2022-5-53-60","DOIUrl":"https://doi.org/10.18412/1816-0387-2022-5-53-60","url":null,"abstract":"A phenol–tetralin model mixture was used to investigate the effect of the oxygen-containing compound on the cracking of aromatic hydrocarbon. The analysis of temperature dependences of the cracking rate constant for tetralin and tetralin in a mixture with phenol indicates that the cracking of tetralin is hindered in the case of its simultaneous conversion with the oxygen-containing compound due to higher adsorptivity of phenol on the catalyst surface. It was found that the presence of phenol in the model mixture changes the composition of liquid products, especially at a low cracking temperature. In addition, the effect of water on conversion of the phenol–tetralin mixture was studied. The presence of water in the model feedstock was shown to decrease the hindering of the aromatic hydrocarbon cracking by the oxygencontaining compound. The results of catalytic transformations revealed that the addition of water increased total conversion of the mixture and conversion of tetralin irrespective of temperature. Essential qualitative differences in the distribution of cracking products of the model mixtures containing or not containing water were not found.","PeriodicalId":17783,"journal":{"name":"Kataliz v promyshlennosti","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81280710","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