Design of Colloidal Pt Catalysts Encapsulated by Silica Nano Membranes for Enhanced Stability in H2S Streams

被引：16

作者：

Calderone, Vincenzo Roberto

Schuetz-Widoniak, Johanna ^{[1
]}

Bezemer, G. Leendert ^{[2
]}

Bakker, Geert ^{[2
]}

Steurs, Chantal ^{[2
]}

Philipse, Albert P. ^{[1
]}

机构：

[1] Univ Utrecht, Debye Inst, Vant Hoff Lab Phys & Colloid Chem, NL-3584 CH Utrecht, Netherlands

[2] Shell Technol Ctr Amsterdam, NL-1031 HW Amsterdam, Netherlands

来源：

CATALYSIS LETTERS | 2010年 / 137卷 / 3-4期

关键词：

Catalyst poisoning; Silica membranes; Platinum and silica colloids; METAL-CATALYSTS; HETEROGENEOUS CATALYSIS; PLATINUM NANOPARTICLES; SUPPORTED CATALYST; HYDROGENATION; PARTICLES;

D O I：

10.1007/s10562-010-0359-3

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：

Poisoning of platinum catalysts by sulphur compounds is a significant problem that prevents their application in untreated gas streams. We introduce a novel concept to circumvent the poisoning problem by encapsulating individual platinum nano-particles with silica layers that act as selective membranes. Greatly enhanced sulfur tolerance for sufficiently dense illustrates the potential of our approach to design noble metal catalysts that survive in sulphur containing gas streams.

引用

页码：132 / 140

页数：9

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