CeO2-ZnO/KIT-6催化剂在光催化吸附脱硫中的应用

doi:10.19964/j.issn.1006-4990.2022-0142

Abstract

Abstract:

Photocatalytic adsorption desulfurization technology has attracted great attention in the field of oil desulfurization.The development of bifunctional materials with high photocatalytic activity and organic sulfide adsorption capacity is the key.3D mesoporous ceria oxide-zinc oxide/KIT-6（CeO₂-ZnO/KIT-6） catalyst was synthesized for the first time and applied to the photocatalytic adsorption desulfurization of dibenzothiophene（DBT）.The catalyst was characterized by X-ray diffraction（XRD），nitrogen adsorption desorption and transmission electron microscope（TEM），and the conversion performance of the catalyst to DBT under light was studied.The experimental results showed that CeO₂-ZnO/KIT-6 had good photocatalytic desulfurization ability without adding additional oxidants（such as oxygen，hydrogen peroxide or organic oxidants）.When the mass fraction of cerium dioxide was 10% and the mass fraction of zinc oxide was 15%，the conversion of DBT by CeO₂-ZnO/KIT-6 catalyst could reach 90%，and the maximum adsorption capacity（calculated by sulfur） was 8.1 mg/g.The oxidant free system was very beneficial to the subsequent treatment of fuel and could significantly reduce the desulfurization cost.

Key words: photocatalysis, desulfurization, KIT-6, ZnO, CeO₂

CLC Number:

TQ115

ZHANG Zhe,LIAO Mingyu,CHEN Ming,YU Shanshan,ZHOU Kangdi,LI Jiachun,ZHANG Linfeng,WU Huadong,GUO Jia. Application of CeO₂-ZnO/KIT-6 catalyst in photocatalytic adsorption desulfurization[J]. Inorganic Chemicals Industry, 2022, 54(9): 143-149.

Figures/Tables 11

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催化剂	比表面积/ （m²·g^-1）	孔径/ nm	孔容/ （mL·g^-1）
KIT-6	752.65	6.54	0.92
ZnO（15）/KIT-6	543.58	6.56	0.79
CeO₂（5）-ZnO（15）/KIT-6	470.43	6.52	0.76
CeO₂（10）-ZnO（15）/KIT-6	401.49	5.63	0.59
CeO₂（15）-ZnO（15）/KIT-6	378.53	6.54	0.56

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Application of CeO₂-ZnO/KIT-6 catalyst in photocatalytic adsorption desulfurization

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Application of CeO2-ZnO/KIT-6 catalyst in photocatalytic adsorption desulfurization