文献类型：期刊文献

中文题名：含硫条件下PtPd/ZrO_(2)催化甲烷燃烧性能

英文题名：Catalytic performance of PtPd/ZrO_(2)for methane combustion under sulfur-containing conditions

作者：程亮[1];王丽[1];郭耘[1]

机构：[1]华东理工大学化学与分子工程学院工业催化研究所,上海200237

年份：2024

卷号：32

期号：12

起止页码：32

中文期刊名：工业催化

外文期刊名：Industrial Catalysis

基金：国家自然科学基金项目(22376063)。

语种：中文

中文关键词：催化化学;甲烷燃烧;PtPd/ZrO_(2);耐硫;耐水

外文关键词：catalytic chemistry;methane combustion;PtPd/ZrO_(2);sulfur resistance;water-fast

摘要：甲烷是重要的温室气体,控制其排放不仅可减缓温室效应还可降低环境污染。采用浸渍法制备PtPd/ZrO_(2)催化剂并考察其在含水、含硫条件下对甲烷催化燃烧的性能。利用XRD、H_(2)-TPR、HAADF-TEM、XPS等分析催化剂结构、还原性能和表面化学状态,通过In situ DRIFTS探究催化剂耐硫性能提升的原因。结果表明,与干燥条件下相比,PtPd/ZrO_(2)在含H_(2)O和SO_(2)条件下的甲烷全转化温度仅向高温偏移62℃。双金属之间的相互作用促进载体表面的分散度、影响贵金属的化学状态以及提高催化剂的氧化还原性能;双金属未影响对甲烷的吸附反而抑制活性金属的硫酸盐化、减少催化剂表面总的硫酸盐沉积量。
Methane is an important greenhouse gas,and controlling its emission can not only reduce the warming effect but also reduce environmental pollution.The PtPd/ZrO_(2)catalyst was prepared by impregnation method and its catalytic performance for methane combustion under the condition of water and sulfur was investigated.XRD,H_(2)-TPR,HAADF-TEM and XPS were used to analyze the structure,reduction performance and surface chemical state of the catalyst.The reasons for the improvement of sulfur resistance were investigated In situ DRIFTS.The results show that,compared with the dry condition,the total methane conversion temperature of PtPd/ZrO_(2)only shifts to the high temperature by 62℃under the condition containing H_(2)O and SO_(2).The interaction between the bimetals promotes the dispersion of the support surface,affects the chemical state of the precious metal and improves the REDOX performance of the catalyst.The bimetal did not affect the adsorption of methane but inhibited the sulfation of active metal and reduced the total sulfate deposition on the catalyst surface.