In situ-XAS and catalytic study of acrolein hydrogenation over silver catalyst:: Control of intramolecular selectivity by the pressure

被引：19

作者：

Bron, M

Teschner, D

Knop-Gericke, A

Scheybal, A

Steinhauer, B

Hävecker, M

Födisch, R

Hönicke, D

Schlögl, R

Claus, P

机构：

[1] Tech Univ Darmstadt, Dept Chem, D-64287 Darmstadt, Germany

[2] Max Planck Gesell, Fritz Haber Inst, Dept Inorgan Chem, D-14195 Berlin, Germany

[3] Chemnnitz Univ Technol, D-09111 Chemnitz, Germany

来源：

CATALYSIS COMMUNICATIONS | 2005年 / 6卷 / 05期

关键词：

D O I：

10.1016/j.catcom.2005.02.013

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 gas phase hydrogenation of acrolein over 7.5% Ag/SiO2 has been studied in a broad pressure range from 7.5 mbar to 20 bar. Higher pressures favour the formation of allyl alcohol (selectivities up to 42%), whereas at low pressures propionaldehyde is by far the main product. In situ-XAS has been performed at 7.5 mbar in order to gain insight into the interaction of acrolein with Ag(111). Hydrogenated propionaidehyde-like surface species could be detected which orientated parallel to the surface. The observed intermediate correlates perfectly with the online catalytic data. (c) 2005 Elsevier B.V. All rights reserved.

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页码：371 / 374

页数：4

相关论文

共 11 条

[1] Towards the "pressure and materials gap": Hydrogenation of acrolein using silver catalysts [J].

Bron, M ;

Kondratenko, E ;

Trunschke, A ;

Claus, P .

ZEITSCHRIFT FUR PHYSIKALISCHE CHEMIE-INTERNATIONAL JOURNAL OF RESEARCH IN PHYSICAL CHEMISTRY & CHEMICAL PHYSICS, 2004, 218 (04) :405-423

[2] Supported gold nanoparticles from quantum dot to mesoscopic size scale:: Effect of electronic and structural properties on catalytic hydrogenation of conjugated functional groups [J].

Claus, P ;

Brückner, A ;

Mohr, C ;

Hofmeister, H .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2000, 122 (46) :11430-11439

[3] Selective hydrogenation of α,β-unsaturated aldehydes and other C=O and C=C bonds containing compounds [J].

Claus, P .

TOPICS IN CATALYSIS, 1998, 5 (1-4) :51-62

[4] Electron microscopy and catalytic study of silver catalysts: Structure sensitivity of the hydrogenation of crotonaldehyde [J].

Claus, P ;

Hofmeister, H .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (14) :2766-2775

[5] INFRARED REFLECTION-ABSORPTION SPECTROSCOPIC STUDY ON THE ADSORPTION STRUCTURES OF ACROLEIN ON AN EVAPORATED SILVER FILM [J].

FUJII, S ;

OSAKA, N ;

AKITA, M ;

ITOH, K .

JOURNAL OF PHYSICAL CHEMISTRY, 1995, 99 (18) :6994-7001

[6] Probing the electronic structure of an active catalyst surface under high-pressure reaction conditions:: the oxidation of methanol over copper [J].

Knop-Gericke, A ;

Hävecker, M ;

Schedel-Niedrig, T ;

Schlögl, R .

CATALYSIS LETTERS, 2000, 66 (04) :215-220

[7]

Knop-Gericke A, 1998, NUCL INSTRUM METH A, V406, P311, DOI 10.1016/S0168-9002(98)91991-X

[8] Coverage dependent adsorption of acrolein on pt(111) from a combination of first principle theory and HREELS study [J].

Loffreda, D ;

Jugnet, Y ;

Delbecq, F ;

Bertolini, JC ;

Sautet, P .

JOURNAL OF PHYSICAL CHEMISTRY B, 2004, 108 (26) :9085-9093

[9] COMPUTERIZED REACTION CONTROL IN A MICROREACTOR SYSTEM FOR HETEROGENEOUS CATALYSIS [J].

LUCAS, M ;

CLAUS, P .

CHEMIE INGENIEUR TECHNIK, 1995, 67 (06) :773-777

[10] The influence of real structure of gold catalysts in the partial hydrogenation of acrolein [J].

Mohr, C ;

Hofmeister, H ;

Claus, P .

JOURNAL OF CATALYSIS, 2003, 213 (01) :86-94