Formation of Bronsted acid sites in the reaction of cyclohexanol on NaCeY zeolites

被引：0

作者：

Vogt, O

Nattich, M

Datka, J

Gil, B

机构：

[1] Krakow Tech Univ, Inst Organ Chem & Technol, PL-31155 Krakow, Poland

[2] Jagiellonian Univ, Fac Chem, PL-30060 Krakow, Poland

来源：

BULLETIN OF THE POLISH ACADEMY OF SCIENCES-CHEMISTRY | 2002年 / 50卷 / 02期

关键词：

D O I：

暂无

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

This study was undertaken to elucidate why the catalytic activity of NaCeY in cyclohexanol reactions carried out in a pulse reactor increases with the pulse number. We studied therefore the effect of cyclohexanol and also of ethanol and water on catalytic activity of NaCeY (of exchange degrees 36 and 72%) in cyclohexanol reactions: isomerization and disproportionation. We also studied the reaction of cyclohexanol and water with NaCeY zeolite by IR spectroscopy. Our results evidenced that new Bronsted acid sites were formed by the reaction of cyclohexanol, and water. This was shown by IR spectroscopy: the increase of Si-O1H-Al band 3638 cm(-1) and in increase of ammonium ions band (upon ammonia adsorption), The new sites were formed by hydrolysis of Ce3+ ions with water introduced in a pulse, or produced by dehydration of cyclohexanol catalyzed by acid sites. Formation of new Bronsted acid sites resulted in an increase of catalytic activity of NaCeY in cyclohexene reaction as observed in this study and also in cyclohexanol reactions.

引用

页码：281 / 288

页数：8

共 50 条

[31] PETR 110-Nonoxidative alkane activation in zeolites by Bronsted and Lewis acid sites
Sievers, Carsten
Chinthala, Praveen
Schussler, Florian
Zhu, Yongzhong
Lercher, J. A.
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 2008, 235
[32] A Method for the Selective Quantification of Bronsted Acid Sites on External Surfaces and in Mesopores of Hierarchical Zeolites
Rieg, Carolin
Li, Zheng
Kurtz, Alan
Schmidt, Maximilian
Dittmann, Daniel
Benz, Michael
Dyballa, Michael
JOURNAL OF PHYSICAL CHEMISTRY C, 2021, 125 (01): : 515 - 525
[33] High-Temperature Decomposition of Bronsted Acid Sites in Gallium-Substituted Zeolites
Al-majnouni, Khalid A.
Hould, Nathan D.
Lonergan, William W.
Vlachos, Dionisios G.
Lobo, Raul F.
JOURNAL OF PHYSICAL CHEMISTRY C, 2010, 114 (45): : 19395 - 19405
[34] Origin of Water-Induced Bronsted Acid Sites in Sn-BEA Zeolites
Sushkevich, Vitaly L.
Kots, Pavel A.
Kolyagin, Yury G.
Yakimov, Alexander V.
Marikutsa, Artem V.
Ivanova, Irina I.
JOURNAL OF PHYSICAL CHEMISTRY C, 2019, 123 (09): : 5540 - 5548
[35] NMR characterization of Bronsted acid sites in faujasitic zeolites with use of perdeuterated trimethylphosphine oxide
Karra, MD
Sutovich, KJ
Mueller, KT
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2002, 124 (06) : 902 - 903
[36] NMR characterization of bronsted acid sites in faujasitic zeolites with use of perdeuterated trimethylphosphine oxide
Karra, Murthy D.
Sutovich, Kevin J.
Mueller, Karl T.
Journal of the American Chemical Society, 2002, 124 (06): : 902 - 903
[37] A first-principles evaluation of the stability, accessibility, and strength of Bronsted acid sites in zeolites
Zhai, Dong
Liu, Yi
Zheng, Huimin
Zhao, Liang
Gao, Jinsen
Xu, Chunming
Shen, Baojian
JOURNAL OF CATALYSIS, 2017, 352 : 627 - 637
[38] Detection and characterization of Bronsted acid sites within zeolites using dyes as indicators.
Thomas, KJ
Rao, VJ
Ramamurthy, V
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1998, 216 : U693 - U693
[39] Generation of active sites for ethane aromatization in ZSM-5 zeolites by a solid-state reaction of zinc metal with Bronsted acid sites of the zeolite
Heemsoth, J
Tegeler, E
Roessner, F
Hagen, A
MICROPOROUS AND MESOPOROUS MATERIALS, 2001, 46 (2-3) : 185 - 190
[40] Location of Bronsted and cation sites in dehydrated zeolites: A comparison
Alberti, A
Cruciani, G
Dalconi, MC
Martucci, A
Caruso, S
OXIDE-BASED SYSTEMS AT THE CROSSROADS OF CHEMISTRY, 2001, 140 : 13 - 26

← 1 2 3 4 5 →