A confined growth strategy to construct 3DOM SiO_(2) nanoreactor insitu embedded Co_(3)O_(4) nanoparticles catalyst for the catalytic combustion of VOCs:Superior H_(2)O and SO_(2) resistance  

作　　者：Weigao Han Shilin Wu Fang Dong Weiliang Han Yinghao Chu Linghui Su Zhicheng Tang 

机构地区：[1]State Key Laboratory for Oxo Synthesis and Selective Oxidation,National Engineering Research Center for Fine Petrochemical Intermediates,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Lanzhou 730000,China [2]University of Chinese Academy of Sciences,Beijing 100049,China [3]Dalian National Laboratory for Clean Energy,Dalian 116023,China [4]College of Architecture and Environment,Sichuan University,Chengdu 610000,China

出　　处：《Nano Research》2024年第1期207-220,共14页纳米研究（英文版）

基　　金：supported by the National Natural Science Foundation of China(No.52070182);the DNL Cooperation Found,CAS(No.DNL202004);the Joint Fund of the Yulin University and the Dalian National Laboratory for Clean Energy(YLU-DNL)(No.202206);Talents of Innovation and Entrepreneurship Project of Lanzhou,China(No.2022-RC-26);Major Program of the Lanzhou Institute of Chemical Physics,CAS(No.ZYFZFX-10);Key talent project of Gansu Province.

摘　　要：SO_(2)poisoning is a common problem in the catalytic combustion of volatile organic compounds(VOCs).In this work,we took three-dimensionally ordered macroporous and mesoporous(3DOM)SiO_(2)as the nanoreactor to protect active sites from SO_(2)erosion in the catalytic combustion of benzene.Simultaneously,the confined growth of metal active nanoparticles in the multi-stage pore is also full of challenges.And we successfully confined Co_(3)O_(4)nanoparticles(NPs)in macroporous and mesoporous channels.Interestingly,the precursors’growth in the pore was controlled and nanoreactors with different pore sizes were prepared by adjusting the loading amount and preparation methods.It is discovered that the Co_(3)O_(4)NPs confined in 3DOM SiO_(2)nanoreactor showed superior sulfur and water resistance.Density functional theory(DFT)calculations verified that the Co-Si catalyst had high SO_(2)adsorption energy(-0.48 eV),which illustrated that SO_(2)was hard to attach to the surface of the Co-Si catalyst.The SiO_(2)nanoreactor had low SO_(2)adsorption energy(-5.15 eV),which indicated that SO_(2)was easily absorbed on SiO_(2)nanoreactor.This illustrated that the SiO_(2)nanoreactor could protect effectively active sites from SO_(2)erosion.

关 键 词：zeolitic imidazolate frameworks(ZIFs) Co_(3)O_(4) benzene catalytic combustion NANOREACTOR sulfur and water resistance 

分 类 号：O64[理学—物理化学]