Reversible and irreversible deactivation of supported bimetallic catalysts for the dehydrogenation of lower paraffins

被引：14
|
作者：
Pakhomov, NA [1 ]
机构：
[1] Russian Acad Sci, Siberian Div, Boreskov Inst Catalysis, Novosibirsk 630090, Russia
来源：
KINETICS AND CATALYSIS | 2001年 / 42卷 / 03期
基金：
俄罗斯基础研究基金会;
关键词：
D O I：
10.1023/A:1010409230898
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The reasons and nature of the deactivation of spinel-supported bimetallic Pt-Sn, Pt-In, and Pt-Cu catalysts in the steam dehydrogenation of C-4-C-5 paraffins are analyzed. The deactivation can be reversible and irreversible. Reversible deactivation is associated with the effects of the composition of reaction medium and gaseous medium for preliminary treatment on the surface composition of supported bimetallic alloys and with the coking of catalysts. Irreversible deactivation can result from the irreproducibility of the phase composition and dispersion of supported alloys in dehydrogenation-regeneration cycles and from the carbon erosion of catalysts. This erosion consists in the removal of active metal particles to the bulk of carbon deposits. The formation of carbon deposits on the surfaces of spinel supports and bimetallic catalysts is considered. Recommendations for optimizing the composition and the operating conditions of catalysts are given in order to reduce the effects of factors that result in reversible and irreversible deactivation.
引用
收藏
页码：334 / 343
页数：10
相关论文
共 50 条
  • [1] Reversible and Irreversible Deactivation of Supported Bimetallic Catalysts for the Dehydrogenation of Lower Paraffins
    N. A. Pakhomov
    [J]. Kinetics and Catalysis, 2001, 42 : 334 - 343
  • [2] Features of formation of supported bimetallic platinum catalysts for dehydrogenation of lower paraffins
    Pakhomov, NA
    Buyanov, RA
    [J]. RUSSIAN JOURNAL OF APPLIED CHEMISTRY, 1997, 70 (07) : 1074 - 1084
  • [3] Physicochemical bases for the preparation of spinel supported bimetallic platinum catalysts for dehydrogenation of lower paraffins.
    Pakhomov, NA
    Buyanov, RA
    Zolotovskii, BP
    [J]. PREPARATION OF CATALYSTS VII, 1998, 118 : 185 - 194
  • [4] Understanding the reversible and irreversible deactivation of methane oxidation catalysts
    Mortensen, Rasmus Lykke
    Noack, Hendrik-David
    Pedersen, Kim
    Dunstan, Maja A.
    Wilhelm, Fabrice
    Rogalev, Andrei
    Pedersen, Kasper S.
    Mielby, Jerrik
    Mossin, Susanne
    [J]. APPLIED CATALYSIS B-ENVIRONMENT AND ENERGY, 2024, 344
  • [5] Spectroscopic study on the irreversible deactivation of chromia/alumina dehydrogenation catalysts
    Puurunen, RL
    Weckhuysen, BM
    [J]. JOURNAL OF CATALYSIS, 2002, 210 (02) : 418 - 430
  • [6] DEACTIVATION OF ALUMINA PLATINUM CATALYSTS WITH PROMOTING ADDITIVES IN DEHYDROGENATION OF HIGHER NORMAL-PARAFFINS
    TYUPAEV, AP
    TIMOFEEVA, EA
    ISAGULYANTS, GV
    [J]. BULLETIN OF THE ACADEMY OF SCIENCES OF THE USSR DIVISION OF CHEMICAL SCIENCE, 1982, 31 (11): : 2278 - 2279
  • [7] OXIDATIVE DEHYDROGENATION OF LOWER PARAFFINS WITH ZSM-5 ZEOLITE CATALYSTS
    FUJIMOTO, K
    NAKAMURA, I
    YOKOTA, K
    [J]. ZEOLITES, 1989, 9 (02): : 120 - 122
  • [8] FTIR and XPS study of supported PtSn catalysts used for light paraffins dehydrogenation
    deMiguel, S
    Castro, A
    Scelza, O
    Fierro, JLG
    Soria, J
    [J]. CATALYSIS LETTERS, 1996, 36 (3-4) : 201 - 206
  • [9] Identification of reversible and irreversible deactivation of MDA catalysts: A key to design a viable process
    Beuque, Antoine
    Valtchev, Valentin
    Mintova, Svetlana
    Gilson, Jean-Pierre
    Pinard, Ludovic
    [J]. JOURNAL OF CATALYSIS, 2023, 426 : 39 - 51
  • [10] Dehydrogenation of methoxyisopropanol to methoxyacetone on supported bimetallic Cu-Zn catalysts
    Landau, MV
    Kogan, SB
    Herskowitz, M
    [J]. HETEROGENEOUS CATALYSIS AND FINE CHEMICALS IV, 1997, 108 : 407 - 414
12345