改性13X沸石载体对室温下用于氢氧化的钯基催化剂的影响。

Effect of a modified 13X zeolite support in Pd-based catalysts for hydrogen oxidation at room temperature.

作者信息

Jang Younghee, Lee Sang Moon, Kim Sung Su

机构信息

Department of Environmental Energy Engineering, Graduate School of Kyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon-si Gyeonggi-do Korea.

Department of Environmental Energy Engineering, Kyonggi University 154-42, Gwanggyosan-ro, Yeongtong-gu Suwon-si Gyeonggi-do Korea

出版信息

RSC Adv. 2021 Nov 25;11(60):38047-38053. doi: 10.1039/d1ra06395b. eCollection 2021 Nov 23.

DOI:10.1039/d1ra06395b

PMID:35498056

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9043908/

Abstract

This study investigated the effect of a modified 13X zeolite to Pd/zeolite catalyst on the oxidation of hydrogen to ensure safety from hydrogen leakage. The catalytic activity of Pd/zeolite catalysts was significantly affected by acid treatment of 13X zeolite support and various calcination temperatures (300 °C, 400 °C, 500 °C, 600 °C) of the Pd/zeolite catalyst. To understand the correlation between the activity and physical properties of the catalysts, activity test, XRD, BET, TEM, TPR, and TPO were performed; Pd/13X (400) was shown to have a high catalytic activity, which depended on the dispersion and particle size of palladium. Also, a strong PdH on the catalyst surface was formed, and a high catalytic activity at a low hydrogen concentration was obtained.

摘要

本研究考察了改性13X沸石负载钯催化剂对氢气氧化的作用，以确保氢气泄漏时的安全性。13X沸石载体的酸处理以及钯/沸石催化剂的不同煅烧温度（300℃、400℃、500℃、600℃）对钯/沸石催化剂的催化活性有显著影响。为了解催化剂活性与物理性质之间的关系，进行了活性测试、XRD、BET、TEM、TPR和TPO；结果表明，Pd/13X(400)具有较高的催化活性，这取决于钯的分散度和粒径。此外，催化剂表面形成了强PdH，在低氢浓度下也获得了较高的催化活性。