Promotional effect of spilt-over hydrogen on m-xylene isomerization over NiS/Al2O3-USY

被引：4
|
作者：
Yang, MG [1 ]
Nakamura, I [1 ]
Fujimoto, K [1 ]
机构：
[1] Univ Tokyo, Grad Sch Engn, Dept Appl Chem, Bunkyo Ku, Tokyo 113, Japan
来源：
SPILLOVER AND MIGRATION OF SURFACE SPECIES ON CATALYSTS | 1997年 / 112卷
关键词：
D O I：
10.1016/S0167-2991(97)80841-5
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：
Gaseous hydrogen promoted markedly the catalytic activity of ultrastable Y zeolite (USY) for m-xylene isomerization under the conditions of 603 K and 1.0 MPa, when it was physically mixed with sulfided nickel supported on Al2O3 (NiS/Al2O3), whereas in the present system the NiS/Al2O3 component only did not show any effective activity for the reaction or effects of suppressing the coke formation on the USY zeolite. The H-D exchange rate of the OH groups on the USY zeolite surface in the NiS/Al2O3 -USY hybrid catalyst is five times higher than that of USY alone. It is strongly suggested that active hydrogen species formed on NiS sites and spilled over to Al2O3 and then to USY promote the acid catalysis on the USY.
引用
收藏
页码：221 / 228
页数：8
相关论文
共 50 条
  • [21] Kinetics and stereoselectivity of o-xylene hydrogenation over Pd/Al2O3
    Neyestanaki, AK
    Mäki-Arvela, P
    Backman, H
    Karhu, H
    Salmi, T
    Väyrynen, J
    Murzin, DY
    JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, 2003, 193 (1-2) : 237 - 250
  • [22] Influence of Zirconium Modified USY on Coupled Hydrogenation and Ring Opening of Tetralin Over NiW/USY + Al2O3
    Yandan Wang
    Penghui Zeng
    Hao Li
    Qiaoxia Guo
    Baojian Shen
    Catalysis Letters, 2017, 147 : 1704 - 1713
  • [23] Influence of Zirconium Modified USY on Coupled Hydrogenation and Ring Opening of Tetralin Over NiW/USY + Al2O3
    Wang, Yandan
    Zeng, Penghui
    Li, Hao
    Guo, Qiaoxia
    Shen, Baojian
    CATALYSIS LETTERS, 2017, 147 (07) : 1704 - 1713
  • [24] The effect of hydrogen on thiophene catalytic removal over Ni/Al2O3
    Zhao, Jinchong
    Chai, Yongming
    Liu, Bin
    Liu, Yaqing
    Liu, Yunqi
    Liu, Chenguang
    CATALYSIS COMMUNICATIONS, 2019, 119 : 6 - 10
  • [25] Selective catalytic reduction of NOx using propene and ethanol over catalysts of Ag/Al2O3 prepared by microemulsion and promotional effect of hydrogen
    da Silva, Rosangela
    Cataluna, Renato
    Martinez-Arias, Arturo
    CATALYSIS TODAY, 2009, 143 (3-4) : 242 - 246
  • [26] Kinetics and modeling of o-xylene hydrogenation over Pt/γ-Al2O3 catalyst
    Neyestanaki, AK
    Backman, H
    Mäki-Arvela, P
    Wärna, J
    Salmi, T
    Murzin, DY
    CHEMICAL ENGINEERING JOURNAL, 2003, 91 (2-3) : 271 - 278
  • [27] Catalytic Oxidation of o-Xylene over Pd/Y-Al2O3 Catalysts
    Hu Ling-Xiao
    Wang Lian
    Wang Fei
    Zhang Chang-Bin
    He Hong
    ACTA PHYSICO-CHIMICA SINICA, 2017, 33 (08) : 1681 - 1688
  • [28] Mathematical modeling of o-xylene hydrogenation kinetics over Pd/Al2O3
    Backman, H
    Neyestanaki, AK
    Murzin, DY
    JOURNAL OF CATALYSIS, 2005, 233 (01) : 109 - 118
  • [29] EVALUATION OF M-XYLENE AMMOXIDATION AT BENCH-SCALE OPERATION IN THE PRESENCE OF V2O5/Γ-AL2O3 CATALYST
    Jeon, Yukwon
    Row, Sung Wook
    Park, Sang Sun
    Lee, Sang Duek
    Oh, Kyeongseok
    Shul, Yong-Gun
    CANADIAN JOURNAL OF CHEMICAL ENGINEERING, 2015, 93 (05): : 881 - 887
  • [30] Promotional Effect of Ag on the Catalytic Decomposition of N2O in the Presence of O2 over the Al2O3-Supported Rh Catalyst
    Jing, Yuan
    He, Chenxi
    Zhang, Ningqiang
    Murano, Yu
    Toyoshima, Ryo
    Kondoh, Hiroshi
    Kageyama, Yuuta
    Inomata, Hironori
    Toyao, Takashi
    Shimizu, Ken-ichi
    ACS CATALYSIS, 2023, 13 (19) : 12983 - 12993
12345