High-performance Cr-Zr-O and Cr-Zr-K-O catalysts prepared by nanocasting for dehydrogenation of propane to propene

被引：31

作者：

Wegrzyniak, A. ^{[1
]}

Rokicinska, A. ^{[2
]}

Hedrzak, E. ^{[1
]}

Michorczyk, B. ^{[1
]}

Zenczak-Tomera, K. ^{[1
]}

Kustrowski, P. ^{[2
]}

Michorczyk, P. ^{[1
]}

机构：

[1] Cracow Univ Technol, Inst Organ Chem & Technol, Warszawska 24, PL-31155 Krakow, Poland

[2] Jagiellonian Univ, Fac Chem, Gronostajowa 2, PL-30387 Krakow, Poland

来源：

CATALYSIS SCIENCE & TECHNOLOGY | 2017年 / 7卷 / 04期

关键词：

MESOPOROUS METAL-OXIDES; CHROMIA-ZIRCONIA CATALYSTS; HIGH-SURFACE-AREA; GALLIUM OXIDE; CHROMIA/ZIRCONIA CATALYSTS; ISOBUTANE DEHYDROGENATION; MECHANICAL STABILITY; INORGANIC OXIDES; MOLECULAR-SIEVES; I-BUTANE;

D O I：

10.1039/c7cy01744h

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：

Ordered mesoporous Cr-Zr-O and Cr-Zr-K-O catalysts were prepared by nanocasting using a CMK-3 carbon replica as a hard template. The synthesized oxide nanoreplicas had a uniform pore-size distribution centered in the range of 5.5-6.5 nm and specific surface areas of 123-164 m(2) g(-1). Results of physicochemical characterization (UV-vis DRS, EPR, XRD, XPS and H-2-TPR) revealed that chromium species were stabilized in +3, +5 and +6 oxidation states in all samples. The developed materials exhibited excellent catalytic performance and much higher resistance to deactivation during the process of dehydrogenation of propane to propene in comparison with a material prepared without the CMK-3 hard template assistance. Potassium doping (0.2, 0.5 or 1.0 wt%) of the catalyst with a Zr/Cr atomic ratio of 5 enhanced the selectivity to propene and resistance to coke deposition.

引用

页码：6059 / 6068

页数：10

共 62 条

[1] Relationship between Surface Chemistry and Catalytic Performance of Mesoporous γ-Al2O3 Supported VOX Catalyst in Catalytic Dehydrogenation of Propane [J].

Bai, Peng ;

Ma, Zhipeng ;

Li, Tingting ;

Tian, Yupeng ;

Zhang, Zhanquan ;

Zhong, Ziyi ;

Xing, Wei ;

Wu, Pingping ;

Liu, Xinmei ;

Yan, Zifeng .

ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (39) :25979-25990

[2] Dehydrogenation and oxydehydrogenation of paraffins to olefins [J].

Bhasin, MM ;

McCain, JH ;

Vora, BV ;

Imai, T ;

Pujadó, PR .

APPLIED CATALYSIS A-GENERAL, 2001, 221 (1-2) :397-419

[3] The Nature of Surface CrOx Sites on SiO2 in Different Environments [J].

Chakrabarti, Anisha ;

Wachs, Israel E. .

CATALYSIS LETTERS, 2015, 145 (04) :985-994

[4] Dehydrogenation of propane over In2O3-Al2O3 mixed oxide in the presence of carbon dioxide [J].

Chen, Miao ;

Xu, Jie ;

Cao, Yong ;

He, He-Yong ;

Fan, Kang-Nian ;

Zhuang, Ji-Hua .

JOURNAL OF CATALYSIS, 2010, 272 (01) :101-108

[5] Formation of a porous zirconium oxo phosphate with a high surface area by a surfactant-assisted synthesis [J].

Ciesla, U ;

Schacht, S ;

Stucky, GD ;

Unger, KK ;

Schuth, F .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION IN ENGLISH, 1996, 35 (05) :541-543

[6] Preparation, characterisation and activity of chromia-zirconia catalysts for propane dehydrogenation [J].

Cutrufello, MG ;

De Rossi, S ;

Ferino, I ;

Monaci, R ;

Rombi, E ;

Solinas, V .

THERMOCHIMICA ACTA, 2005, 434 (1-2) :62-68

[7] Surface characterization of zirconia-coated alumina and silica carriers [J].

Damyanova, S ;

Grange, P ;

Delmon, B .

JOURNAL OF CATALYSIS, 1997, 168 (02) :421-430

[8] Self-Assembled Mesoporous Zirconia and Sulfated Zirconia Nanoparticles Synthesized. by Triblock Copolymer as Template [J].

Das, Swapan K. ;

Bhunia, Manas K. ;

Sinha, Anil K. ;

Bhaumik, Asim .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (20) :8918-8923

[9] Chromia/zirconia catalysts with Cr content exceeding the monolayer. A comparison with chromia/alumina and chromia/silica for isobutane dehydrogenation [J].

De Rossi, S ;

Casaletto, MP ;

Ferraris, G ;

Cimino, A ;

Minelli, G .

APPLIED CATALYSIS A-GENERAL, 1998, 167 (02) :257-270

[10]

DEROSSI S, 1992, APPL CATAL A-GEN, V81, P113

← 1 2 3 4 5 6 7 →