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Preparation of Cu-Loaded Biomass-Derived Activated Carbon Catalysts for Catalytic Wet Air Oxidation of Phenol
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-01-30 , DOI: 10.1021/acs.iecr.9b05750 Hongyu Wang 1 , Guoqiang Li 1 , Shuting Zhang 1 , Yuan Li 2 , Yongle Zhao 1 , Liyuan Duan 1 , Yongfa Zhang 1
Industrial & Engineering Chemistry Research ( IF 3.8 ) Pub Date : 2020-01-30 , DOI: 10.1021/acs.iecr.9b05750 Hongyu Wang 1 , Guoqiang Li 1 , Shuting Zhang 1 , Yuan Li 2 , Yongle Zhao 1 , Liyuan Duan 1 , Yongfa Zhang 1
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A series of Cu-loaded biomass-derived activated carbon (Cu/AC) catalysts with various impregnation ratios were prepared by precursor impregnation (PI) and activated carbon impregnation (ACI) methods. N2 adsorption–desorption, inductively coupled plasma, X-ray diffraction, X-ray photoelectron spectroscopy, transmission electron microscopy, etc., were used to investigate their physicochemical properties. The performance of catalytic wet air oxidation (CWAO) of phenol using O2 as the oxidant was evaluated. The results demonstrated that the catalysts prepared by the PI method have higher specific surface area and Cu content. In the catalysts, Cu species coexisted with Cu2+ and (Cu+ + Cu0). The content of (Cu+ + Cu0) in PI catalysts was higher, which was favorable for the formation of free radicals (O2–· and HO·), and then improved the conversions of phenol and chemical oxygen demand. The PI catalyst prepared with an impregnation ratio of 3 exhibited the best catalytic activity for phenol oxidation. Meanwhile, the loss of Cu species was the main cause of catalyst deactivation.
中文翻译：
负载铜的生物质衍生活性炭催化剂的制备，用于催化湿式氧化苯酚
通过前驱体浸渍（PI）和活性炭浸渍（ACI）方法制备了一系列具有各种浸渍比的负载铜的生物质衍生活性炭（Cu / AC）催化剂。使用N 2吸附-解吸，电感耦合等离子体，X射线衍射，X射线光电子能谱，透射电子显微镜等方法研究了它们的理化性质。评价了以O 2为氧化剂的苯酚的催化湿式氧化（CWAO）性能。结果表明，PI法制备的催化剂具有较高的比表面积和Cu含量。在催化剂中，Cu与Cu 2+和（Cu + + Cu 0）共存。铜含量+ +的Cu 0）在PI催化剂较高，这对的自由基的形成有利（O 2 - ·和·HO），然后提高苯酚和化学需氧量的转换。浸渍比为3的PI催化剂表现出对苯酚氧化的最佳催化活性。同时，Cu物种的损失是催化剂失活的主要原因。
更新日期：2020-01-31
中文翻译：
负载铜的生物质衍生活性炭催化剂的制备，用于催化湿式氧化苯酚
通过前驱体浸渍（PI）和活性炭浸渍（ACI）方法制备了一系列具有各种浸渍比的负载铜的生物质衍生活性炭（Cu / AC）催化剂。使用N 2吸附-解吸，电感耦合等离子体，X射线衍射，X射线光电子能谱，透射电子显微镜等方法研究了它们的理化性质。评价了以O 2为氧化剂的苯酚的催化湿式氧化（CWAO）性能。结果表明，PI法制备的催化剂具有较高的比表面积和Cu含量。在催化剂中，Cu与Cu 2+和（Cu + + Cu 0）共存。铜含量+ +的Cu 0）在PI催化剂较高，这对的自由基的形成有利（O 2 - ·和·HO），然后提高苯酚和化学需氧量的转换。浸渍比为3的PI催化剂表现出对苯酚氧化的最佳催化活性。同时，Cu物种的损失是催化剂失活的主要原因。
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