The Impact of Reaction Pressure on the Catalytic Performance of the Pd-Sb/TiO2 Catalyst in the Acetoxylation of Toluene into Benzyl Acetate

被引：3

作者：

Madaan, Neetika ^{[1
]}

Gatla, Suresh ^{[1
]}

Kalevaru, Venkata Narayana ^{[1
]}

Radnik, Joerg ^{[1
]}

Pohl, Marga-Martina ^{[1
]}

Luecke, Bernhard ^{[1
]}

Brueckner, Angelika ^{[1
]}

Martin, Andreas ^{[1
]}

机构：

[1] Univ Rostock, Leibniz Inst Katalyse eV, D-18059 Rostock, Germany

来源：

CHEMCATCHEM | 2013年 / 5卷 / 01期

关键词：

acetoxylation; antimony; gas-phase reactions; palladium; X-ray diffraction; AROMATIC ACETOXYLATION; PHASE ACETOXYLATION; DEACTIVATION; SIZE;

D O I：

10.1002/cctc.201200522

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 acetoxylation of toluene in the presence of acetic acid and oxygen was performed over a Pd-Sb/TiO2 catalyst at 210 degrees C and at various reaction pressures (1-10 bar). A remarkable improvement in the catalytic performance and a significant shortening of the induction period were found with an increase in pressure. At a pressure of 6 bar, the highest toluene conversion of 75% and 100% selectivity for benzyl acetate were observed. This result could be due to both the restructuring of the catalyst surface and to the formation of active Pd-Sb particles of desired size, composition, and shape during the course of the induction period. Samples of the most-active and spent catalysts were studied by ex situ and in situ XRD, XPS, and TEM.

引用

页码：185 / 191

页数：7

共 50 条

[1] Steady-State and Transient Kinetic Studies of the Acetoxylation of Toluene over Pd-Sb/TiO2
Reining, Sven
Kondratenko, Evgenii V.
Kalevaru, Narayana V.
Martin, Andreas
ACS CATALYSIS, 2016, 6 (07): : 4621 - 4629
[2] Effect of Sb loading on Pd nanoparticles and its influence on the catalytic performance of Sb-Pd/TiO2 solids for acetoxylation of toluene
Kalevaru, V. Narayana
Benhmid, A.
Radnik, J.
Luecke, B.
Martin, A.
JOURNAL OF CATALYSIS, 2006, 243 (01) : 25 - 35
[3] Highly efficient Pd-Sb-TiO2 catalysts for the vapour phase acetoxylation of toluene to benzyl acetate
Benhmid, A
Narayana, KV
Martin, A
Lücke, B
Bischoff, S
Pohl, MM
Radnik, J
Schneider, M
JOURNAL OF CATALYSIS, 2005, 230 (02) : 420 - 435
[4] Highly active and selective Pd-Cu-TiO2 catalyst for the direct synthesis of benzyl acetate by gas phase acetoxylation of toluene
Benhmid, A
Narayana, KV
Martin, A
Lücke, B
Pohl, MM
CHEMISTRY LETTERS, 2004, 33 (10) : 1238 - 1239
[5] Optimization of Reaction Conditions and Regeneration Procedure of the PdSb/TiO2 Catalyst for Acetoxylation of Toluene
Madaan, N.
Gatla, S.
Kalevaru, V. N.
Radnik, J.
Lucke, B.
Brueckner, A.
Martin, A.
TOPICS IN CATALYSIS, 2011, 54 (16-18) : 1197 - 1205
[6] Optimization of Reaction Conditions and Regeneration Procedure of the PdSb/TiO2 Catalyst for Acetoxylation of Toluene
N. Madaan
S. Gatla
V. N. Kalevaru
J. Radnik
B. Lücke
A. Brückner
A. Martin
Topics in Catalysis, 2011, 54
[7] One-step synthesis of benzyl acetate by gas phase acetoxylation of toluene over highly active and selective Pd-Sb-TiO2 catalysts
Benhmid, A
Narayana, KV
Martin, A
Lücke, B
CHEMICAL COMMUNICATIONS, 2004, (18) : 2118 - 2119
[8] Impact of Co-Components on the State of Pd and the Performance of Supported Pd/TiO2 Catalysts in the Gas-Phase Acetoxylation of Toluene
Gatla, Suresh
Madaan, Neetika
Radnik, Joerg
Kalevaru, Venkata Narayana
Luecke, Bernhard
Martin, Andreas
Bentrup, Ursula
Brueckner, Angelika
CHEMCATCHEM, 2011, 3 (12) : 1893 - 1901
[9] Key properties promoting high activity and stability of supported PdSb/TiO2 catalysts in the acetoxylation of toluene to benzyl acetate
Gatla, S.
Madaan, N.
Radnik, J.
Kalevaru, V. N.
Pohl, M. -M.
Luecke, B.
Martin, A.
Brueckner, A.
APPLIED CATALYSIS A-GENERAL, 2011, 398 (1-2) : 104 - 112
[10] Vapor-phase oxidative acetoxylation of toluene to benzyl acetate over SiO2-Supported K-Sn-Pd catalyst
Shu, QY
Wang, XP
Cao, DY
Ren, SZ
CHINESE JOURNAL OF CATALYSIS, 2004, 25 (07) : 511 - 512

← 1 2 3 4 5 →