Zebao Rui
Sun Yat-sen University
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Publication
Featured researches published by Zebao Rui.
Chinese Journal of Chemical Engineering | 2007
Ke Zhang; Huiyuan Gao; Zebao Rui; Y.S. Lin; Yongdan Li
Abstract Thin palladium composite membranes were prepared by modified electroless plating method on α-alumina supports and a dense Pd/α-Al2O3 composite membrane with high hydrogen flux, good selectivity for hydrogen was obtained. It was tested in a single gas permeation system for hydrogen permeance and hydrogen selectivity over nitrogen. The hydrogen permeance of the corresponding membrane was as high as 2.45 × 10−6mol · m−2 · s−1 · Pa−1 and H2/N2 selectivity over 700 at 623K and a pressure difference of 0.1MPa. The main resistance of the composite membrane to H2 permeation lies in the aluminum ceramic support rather than the thin Pd layer.
Chinese Journal of Catalysis | 2015
Huayao Chen; Zebao Rui; Hongbing Ji
Abstract A series of Pt/TiO2(P25) catalysts were prepared by both impregnation (IM) and deposition-precipitation (DP) methods followed by reduction using either a HCHO solution or a H2 stream. The effects of the preparation and reduction conditions and the Pt loading level on structural properties and performance during HCHO oxidation were then studied based on the assessment of adsorbed species on the catalyst surfaces using in-situ diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS). The results indicated that Pt/P25 prepared by DP and reduced with HCHO exhibited homogeneously dispersed Pt nanoparticles with appropriate particle size in addition to a high concentration of chemisorbed oxygen, and also showed high activity for HCHO oxidation. A HCHO conversion of 98% with stable performance over more than 100 h was achieved over Pt/P25 produced using DP and HCHO reduction at 30 °C, even with a 0.4% Pt loading. Pt/P25 synthesized using DP with H2 reduction was less effective at promoting formate decomposition and thus showed less HCHO oxidation activity, likely because of lower levels of chemisorbed oxygen. The Pt/P25 made using IM and H2 reduction had the highest amount of chemisorbed oxygen but also the largest Pt particles, resulting in the lowest activity for both the formation of formate species and formate decomposition into CO species, and thus showed low HCHO oxidation activity.
Chinese Journal of Catalysis | 2016
Jiejing Kong; Xiaodong Lai; Zebao Rui; Hongbing Ji; Shengfu Ji
The fabrication of multicomponent heterojunctions is an effective strategy to improve the performance of TiO 2 based photocatalysts. We provide a new strategy for improving the charge separation and photocatalytic performance of ZnO/TiO 2 composites by the formation of multichannel charge separated heterojunctions. ZnO/P25 composites were prepared by an incipient wetness impregnation method, and applied for the photocatalytic destruction of gaseous toluene. The ZnO/P25 composites consist of anatase TiO 2 (ATiO 2 ), rutile TiO 2 (RTiO 2 ) and hexagonal zincite structures. The parasitic phase of ZnO in P25 leads to the formation of ZnO(002)/ATiO 2 (101)/RTiO 2 (110) heterojunctions that exhibit enhanced light absorption and improved multichannel electron/hole separation. ZnO/P25 heterojunctions can completely oxidize toluene into CO 2 and H 2 O under ultraviolet light irradiation at room temperature, and show enhanced photocatalytic activity in comparison with P25 owing to the efficient electron-hole separation. Such a multichannel charge separated design strategy may provide new insight into the design of highly effective photocatalysts and their potential technological applications.
RSC Advances | 2013
Zebao Rui; Yubing Lu; Hongbing Ji
Porous anodized aluminum oxide (AAO) structure consists of an assembly of identical pores having nanometer dimensions that span a flow reactor so as to produce an array of nano reactors, named as a catalytic nanolith. In order to understand the applicability of the nanolith in volatile organic compounds (VOCs) catalytic combustion and correlate the catalytic performance of the nanolith with its structure, a theoretical analysis of an AAO nanolith reactor dispersed with Pt for the catalytic combustion of selected VOCs (a mixture of naphthalene, propylene, propane and methane) is reported. A one-dimensional adiabatic reactor model has been developed, in which a mixed flow model considering the effect of component diffusion inside the nanopores was adopted, and the pressure drop across the nanolith nanopores as well as the exothermic nature of VOCs combustion were considered. The influence of the operational and design parameters, such as inlet temperature, pressure, and the balance gas as well as the Pt loading density, pore size and wall thickness, on the nanolith performance were studied. The results show that the pressure drop and component diffusion contributions play important roles in the performance of the nanolith reactor. These two factors also relate to the nanolith reactor design parameters, such as pore size, wall thickness and Pt dispersion etc. Considering that all these parameters plus its reactivity can all be readily tailored, the AAO nanolith reactor offers the potential for applications in VOCs catalytic combustion.
Chinese Journal of Catalysis | 2016
Zujin Yang; Xia Zhang; Yanxiong Fang; Zebao Rui; Hongbing Ji
We have designed and prepared β-cyclodextrin (β-CD)-functionalized multi-walled nanotubes (MWCNTs-g-CD) for the oxidation of cinnamon oil to natural benzaldehyde under aqueous conditions. The synergistic effect of combining MWCNTs with β-CD led to a remarkable increase in the performance of the MWCNTs-g-CD for the catalytic oxidation of cinnamaldehyde, which exhibited 95% cinnamaldehyde conversion and 85% selectivity to natural benzaldehyde with a short reaction time of 10 min. The MWCNTs-g-CD also exhibited outstanding recyclability with good stability, showing no discernible decrease in their catalytic activity over five reaction cycles.
Catalysis Today | 2009
Yongdan Li; Zebao Rui; Chun Xia; Matthew Anderson; Y.S. Lin
Journal of Membrane Science | 2009
Zebao Rui; Matthew Anderson; Y.S. Lin; Yongdan Li
Industrial & Engineering Chemistry Research | 2009
Ke Zhang; Huiyuan Gao; Zebao Rui; Peng Liu; Yongdan Li; Y.S. Lin
Journal of Membrane Science | 2012
Zebao Rui; Matthew Anderson; Yongdan Li; Y.S. Lin
Chemical Engineering Journal | 2014
Zebao Rui; Shangren Wu; Chao Peng; Hongbing Ji