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Controlled preparation and characterization of supported CuCr2O4 catalysts for hydrogenolysis of highly concentrated glycerol
Z. H. Xiao; J. H. Xiu; X. K. Wang; B. S. Zhang; C. T. Williams; D. S. Su; C. H. Liang
2013
Source PublicationCatalysis Science & Technology
ISSN2044-4753
Volume3Issue:4Pages:1108-1115
AbstractSupported Cu-Cr catalysts were prepared by a non-alkoxide sol-gel route, and characterized by X-ray diffraction (XRD), high-resolution transmission electron microscopy (HRTEM), H-2-temperature programmed reduction (H-2-TPR) and X-ray photoelectron spectroscopy (XPS) measurement. Their structures were significantly tuned by the Cu-Cr molar ratio. CuCr2O4, CuCr2O4-CuO and CuCr2O4-Cr2O3 structures were confirmed in CuCr(0.5), CuCr(4) and CuCr(0.25) catalysts, respectively. A direct interaction between CuCr2O4 and CuO or Cr2O3 in CuCr(4) and CuCr(0.25) catalyst was observed by the H-2-TPR and XPS results. The catalytic performance of Cu-Cr catalysts with various structures was examined by hydrogenolysis reaction of high concentrated glycerol. Under mild conditions (2.0 MPa and 130 degrees C) and high concentration (100 wt%), the maximum conversion (52%) was obtained over the CuCr(0.5) catalyst, while the CuCr(4) catalyst gave the highest selectivity of 1,2-PD (up to 100%). This finding will result in the production of less waste water and lower energy consumption in the following separation steps during glycerol hydrogenolysis.
description.department[xiao, zihui ; xiu, jinghai ; wang, xinkui ; liang, changhai] dalian univ technol, lab adv mat & catalyt engn, dalian 116012, peoples r china. [zhang, bingsen ; su, dangsheng] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china. [williams, christopher t.] univ s carolina, dept chem engn, columbia, sc 29208 usa. ; xiao, zh (reprint author), dalian univ technol, lab adv mat & catalyt engn, dalian 116012, peoples r china. ; changhai@dlut.edu.cn
KeywordCu-cr Catalysts Propylene-glycol Reaction-mechanism Selective Hydrogenolysis Mixed Oxides Conversion Oxidation Water Xps Co
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Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/71597
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Z. H. Xiao,J. H. Xiu,X. K. Wang,et al. Controlled preparation and characterization of supported CuCr2O4 catalysts for hydrogenolysis of highly concentrated glycerol[J]. Catalysis Science & Technology,2013,3(4):1108-1115.
APA Z. H. Xiao.,J. H. Xiu.,X. K. Wang.,B. S. Zhang.,C. T. Williams.,...&C. H. Liang.(2013).Controlled preparation and characterization of supported CuCr2O4 catalysts for hydrogenolysis of highly concentrated glycerol.Catalysis Science & Technology,3(4),1108-1115.
MLA Z. H. Xiao,et al."Controlled preparation and characterization of supported CuCr2O4 catalysts for hydrogenolysis of highly concentrated glycerol".Catalysis Science & Technology 3.4(2013):1108-1115.
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