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- 저자 : Zhaoyin Hou (검색결과 2 건)
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Haolan Liu,Yuanyuan Jiang,Huaiyuan Zhao,Zhaoyin Hou 한국공업화학회 2021 Journal of Industrial and Engineering Chemistry Vol.102 No.-
Copper-based catalysts are widely used in methanol synthesis, selective catalytic reduction of NOx,hydrogenation, dehydrogenation and hydrogenolysis reactions. In this work, a series of Cux/Zn3 0.5xMg3 0.5xAl2O9 x catalysts were prepared via the controlled calcination and reduction ofhydrotalcite-like structured CuxZn3 0.5xMg3 0.5xAl2(OH)16CO3 precursors. The formation process of Cu2/Zn2Mg2Al2O7 from Cu2Zn2Mg2Al2(OH)16CO3 was characterized via several techniques. Characterizationsresults indicated that the dispersion of Cu in reduced Cu2/Zn2Mg2Al2O7 reached 79.3%, and it exhibitedexcellent activity for the dehydrogenation of 1,4-butanediol (1,4-BDO) to c-butyrolactone (GBL). Thedetected conversion of 1,4-BDO reached 99.2% with a 99.5% selectivity of GBL at 240 C, 0.1 MPa andLHSV 1 = 0.13 h, and the calculated productivity of GBL was 7.07 g-GBL/g-cat/h. And Cu2/Zn2Mg2Al2O7could maintain its activity within 50 h on stream.
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Acetalization of glycerol over sulfated UiO-66 under mild condition
Yuanyuan Jiang,Ruru Zhou,Boyong Ye,Zhaoyin Hou 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.110 No.-
Sulfated metal–organic framework has attracted much attention as a versatile heterogeneous acid for itsstrong acid strength, large surface area and regular pore channels. In this work, sulfated UiO-66 (UiOSO3H-x) was prepared via the direct oxidation of 2-mercaptobenzoic acid substituted UiO-66. The structureand property of the synthesized UiO-SO3H-x were characterized via XRD, FTIR, static water contactangles, XPS, TG-DTA, N2 adsorption–desorption, SEM and TEM in detail. It was found that sulfonic acidgroups dispersed homogenously in the framework of UiO-SO3H-x. And UiO-SO3H-0.2 exhibited excellentperformance and stability for the synthesis of solketal from surplus glycerol among the tested solid acids(H3PW12O40, Amberlyst-45, HY, HBEA, HZSM-5 and ZrHP). The detected conversion of glycerol reached70.3% with a 99.8% selectivity toward solketal at 60 C, and it could maintain its initial activity in fiverecycles. The highest TOF of each acid site in UiO-SO3H-0.2 reached 676.0 h1. Moreover, it was versatilefor the acetalization of glycerol with other ketones/aldehydes.
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