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用于一氧化碳氧化的金属磷酸盐负载型铂催化剂。

Metal Phosphate-Supported Pt Catalysts for CO Oxidation.

作者信息

Qian Xiaoshuang, Qin Hongmei, Meng Tao, Lin Yi, Ma Zhen

机构信息

Shanghai Key Laboratory of Atmospheric Particle Pollution and Prevention (LAP3), Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China.

出版信息

Materials (Basel). 2014 Dec 17;7(12):8105-8130. doi: 10.3390/ma7128105.

DOI:10.3390/ma7128105
PMID:28788293
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5456429/
Abstract

Oxides (such as SiO₂, TiO₂, ZrO₂, Al₂O₃, Fe₂O₃, CeO₂) have often been used to prepare supported Pt catalysts for CO oxidation and other reactions, whereas metal phosphate-supported Pt catalysts for CO oxidation were rarely reported. Metal phosphates are a family of metal salts with high thermal stability and acid-base properties. Hydroxyapatite (Ca(PO₄)₆(OH)₂, denoted as Ca-P-O here) also has rich hydroxyls. Here we report a series of metal phosphate-supported Pt (Pt/M-P-O, M = Mg, Al, Ca, Fe, Co, Zn, La) catalysts for CO oxidation. Pt/Ca-P-O shows the highest activity. Relevant characterization was conducted using N₂ adsorption-desorption, inductively coupled plasma (ICP) atomic emission spectroscopy, X-ray diffraction (XRD), transmission electron microscopy (TEM), CO₂ temperature-programmed desorption (CO₂-TPD), X-ray photoelectron spectroscopy (XPS), and H₂ temperature-programmed reduction (H₂-TPR). This work furnishes a new catalyst system for CO oxidation and other possible reactions.

摘要

氧化物（如SiO₂、TiO₂、ZrO₂、Al₂O₃、Fe₂O₃、CeO₂）常被用于制备用于CO氧化及其他反应的负载型Pt催化剂，而用于CO氧化的金属磷酸盐负载型Pt催化剂鲜有报道。金属磷酸盐是一类具有高热稳定性和酸碱性质的金属盐。羟基磷灰石（Ca(PO₄)₆(OH)₂，此处记为Ca-P-O）也含有丰富的羟基。在此，我们报道了一系列用于CO氧化的金属磷酸盐负载型Pt（Pt/M-P-O，M = Mg、Al、Ca、Fe、Co、Zn、La）催化剂。Pt/Ca-P-O表现出最高的活性。使用N₂吸附-脱附、电感耦合等离子体（ICP）原子发射光谱、X射线衍射（XRD）、透射电子显微镜（TEM）、CO₂程序升温脱附（CO₂-TPD）、X射线光电子能谱（XPS）和H₂程序升温还原（H₂-TPR）进行了相关表征。这项工作为CO氧化及其他可能的反应提供了一种新的催化剂体系。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/adc99ceae450/materials-07-08105-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/927d9ddb3f8e/materials-07-08105-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/9b2b6ecca7d2/materials-07-08105-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/8530fea28997/materials-07-08105-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/d8cc965c607f/materials-07-08105-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/23eb5c134745/materials-07-08105-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/30406ded9634/materials-07-08105-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/1bfecd347a64/materials-07-08105-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/93d55e2586ac/materials-07-08105-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/b5d5426e2c9e/materials-07-08105-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/adc99ceae450/materials-07-08105-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/927d9ddb3f8e/materials-07-08105-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/9b2b6ecca7d2/materials-07-08105-g002a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/8530fea28997/materials-07-08105-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/d8cc965c607f/materials-07-08105-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/23eb5c134745/materials-07-08105-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/30406ded9634/materials-07-08105-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/1bfecd347a64/materials-07-08105-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/93d55e2586ac/materials-07-08105-g008a.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/b5d5426e2c9e/materials-07-08105-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/a232/5456429/adc99ceae450/materials-07-08105-g010.jpg

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