Vibrational properties of CrII Centers on reduced Phillips catalysts highlighted by resonant Raman spectroscopy

被引：34

作者：

Damin, A ^{[1
]}

Bonino, F ^{[1
]}

Bordiga, S ^{[1
]}

Groppo, E ^{[1
]}

Lamberti, C ^{[1
]}

Zecchina, A ^{[1
]}

机构：

[1] Univ Turin, Dept IFM Chem, NIS Ctr Excellence & INSTM UdR Torino, I-10125 Turin, Italy

来源：

CHEMPHYSCHEM | 2006年 / 7卷 / 02期

关键词：

adsorption; chromium; Phillips catalyst; Raman spectroscopy; silica support;

D O I：

10.1002/cphc.200500408

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：

Surface chromate species on Phillips catalysts are probed directly using resonant Raman spectroscopy (see figure). Under pre-resonance conditions, for the first time, the vibrational features of the CrII-active centers and their evolution upon interaction with N2 and CO are observed. © 2006 Wiley-VCH Verlag GmbH & Co. KGaA.

引用

收藏

页码：342 / 344

页数：3

相关论文

共 28 条

[1]

[Anonymous], ANGEW CHEM

[2] The ethylene polymerization with Ziegler catalysts:: Fifty years after the discovery [J].

Böhm, LL .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2003, 42 (41) :5010-5030

[3]

BOHM LL, 2003, ANGEW CHEM, V41, P5162

[4] The structure of the peroxo species in the TS-1 catalyst as investigated by resonant Raman spectroscopy [J].

Bordiga, S ;

Damin, A ;

Bonino, F ;

Ricchiardi, G ;

Lamberti, C ;

Zecchina, A .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2002, 41 (24) :4734-4737

[5]

Brintzinger H. H., 1995, ANGEW CHEM, V107, P1255

[6] STEREOSPECIFIC OLEFIN POLYMERIZATION WITH CHIRAL METALLOCENE CATALYSTS [J].

BRINTZINGER, HH ;

FISCHER, D ;

MULHAUPT, R ;

RIEGER, B ;

WAYMOUTH, RM .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 1995, 34 (11) :1143-1170

[7] SPECTROSCOPY OF CHROMIUM(VI) SPECIES [J].

CIESLAKGOLONKA, M .

COORDINATION CHEMISTRY REVIEWS, 1991, 109 (02) :223-249

[8] Raman spectroscopic study of supported chromium(VI) oxide catalysts [J].

Dines, TJ ;

Inglis, S .

PHYSICAL CHEMISTRY CHEMICAL PHYSICS, 2003, 5 (06) :1320-1328

[9] FTIR investigation of the H2, N2, and C2H4 molecular complexes formed on the Cr(II) sites in the Phillips catalyst:: A preliminary step in the understanding of a complex system [J].

Groppo, E ;

Lamberti, C ;

Bordiga, S ;

Spoto, G ;

Damin, A ;

Zecchina, A .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (31) :15024-15031

[10] In situ, CrK-edge XAS study on the Phillips catalyst:: activation and ethylene polymerization [J].

Groppo, E ;

Prestipino, C ;

Cesano, F ;

Bonino, F ;

Bordiga, S ;

Lamberti, C ;

Thüne, PC ;

Niemantsverdriet, JW ;

Zecchina, A .

JOURNAL OF CATALYSIS, 2005, 230 (01) :98-108