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| 1 | Preparation, Characterization of Superacid SO_4^(2-)/ZrO_2-SiO_2 and Its Activity on Catalytic Synthesis of Methyl p-Nitrobenzoate显示文摘Solid superacid SO42-/Zr O2-SiO2 was prepared by dip-impregnation method, and its catalytic activity was tested with esterification of p-nitrobenzoic acid and methanol. The optimum conditions were also found, that is, the molar ratio between silica and zirconia was 10:1, the calcination temperature was 550 ℃ and the soaked consistency of H2SO4 was 1.0 mol?L-1. Under the conditions that the ratio of methanol to acid(m L/g) was 12:1, the amount of catalyst was 0.5 g, the reaction time was 5 h and the stirring speed was 800 r?min-1, the yield of methyl p-nitrobenzoate could reach up to 90.5%. Then the characterizations of cataslyst, including the acidity and types of acidic centers, specific surface area and surface structure was respectively examined by Hammett indicator, in-situ pyridine IR, BET method, FT-IR(KBr), transmission electron microscope(TEM), and X-ray diffraction(XRD). The results showed that the catalyst SO42-/Zr O2-SiO2 was superacid with high specific surface area due to Ho<-12.70. It contained acidic sites of Lewis and BrΦnsted, and its surface structure changed after esterification. The zirconia crystal was mainly tetragonal and silica crystal was not found. | 王刚 TAO Liya HOU Xin CAO Hi DONG Cheng NIE Wo XU Jun 张立庆 | 2014 | Journal of Wuhan University of Technology(Materials Science)2014，29，5： | 2 |
| 2 | GATA3 and the T-cell lineage:essential functions before and after T-helper-2-cell differentiation显示文摘 | Cheng HI Tai SY Pai SY | 2009 | Nat Rev Immun2009，9，2： | 1 |
| 3 | Molecular mechanisms of the biphasic effects of interferongamma on osteoclastogenesis显示文摘 | Cheng J L iu J S hi Z Jules J X u D L uo S W ei S F eng X | | 0，，： | 1 |
| 4 | The sintering characteristics of Bi2O3 added MgO - CaO - A12O3- SiO2glass powder 显示文摘 | HI Honglo CHENG Fuyang | 1998 | Ceram Int1998，24，： | 1 |
| 5 | Acute renal failure associated with Yersinia pseudotuberculosis 显示文摘 | Cheng HI Choi EH Ha IS | 1995 | Nephron1995，70，： | 1 |
| 6 | Multi-objective optimal planning for designing relief delivery systems 显示文摘 | Tzeng GH Cheng HI Huang TD | 2007 | Transportation research part E2007，43，： | 1 |
| 7 | Autoimmune pathogenesis in dengue virus infection 显示文摘 | Lin CF Wan SW Cheng HI | 2006 | Viral Immunol2006，19，2： | 1 |
| 8 | Supplemention with tetra- hydrobiopterin suppresses the development of hypertension in spon- taneously hypertensive rats显示文摘 | Hong HI Hsiao G Cheng TH | 2001 | Hypertension2001，38，5： | 1 |
| 9 | Pathology of xenograft rejection s a eommentary显示文摘 | Schuurman HI Cheng J Lam T | 2003 | Xenotransplantafion2003，10，4： | 1 |
| 10 | Endothelial nitric oxide synthase deficiency produces accelerated nephropathy in diabetic mice显示文摘 | ZHAO HI WANG S CHENG H | 2006 | J Am Soc Nephrol2006，17，10： | 1 |
| 11 | Chronic exercise enhances vascular responses to clonidine in rats by increasing endothelial alpha2-adrenergic receptor affinity显示文摘 | Cheng SY Jen CJ | 1999 | Chin J Physiol1999，42，2： | 1 |
| 12 | Neuropilin-1 antagonism in human carcinoma cells inhibits migration and enhances chemo- sensitivity显示文摘 | Jia HI Cheng L Tickner M | 2010 | Br J Cancer2010，102，3： | 1 |
| 13 | Acute alcohol intoxica- tion aggravates brain injury caused by intracerebral hemorrhage in rats显示文摘 | Liew HI( Cheng HY Hua4 LC | 2016 | J Stroke Cerebrovasc Dis2016，25，1： | 1 |
| 14 | Chronic exercise enhances vascular responses to clonidine in rats by increasing endothelial alpha 2-adrenergic receptor affinity 显示文摘 | Cheng SY Jen CJ | 1999 | Chin J Physiol1999，42，2： | 1 |
| 15 | Effect of subthreshold infrared laser treatment for drusen regression on macular autofluorescence in patients with age-related macular degeneration显示文摘 | Bessho K Rodanant N Bartsch DU Cheng L Koh HI Freeman WR | 2005 | Retina2005，25，8： | 1 |
| 16 | A 10kW-scale Distributed Power Plant of Natural Gas-Proton Exchange Membrane Fuel Cell显示文摘A 10 kW-scale natural gas fueled proton exchange membrane fuel cell(PEMFC) distributed power plant is presented in this paper,which is designed for cogeneration of power and heat. With homemade catalysts for CO removal in a two-stage methanation process and integrated reactor in the fuel processing system,the reformed fuel with CO molar fraction less than 10-5 is obtained for the fuel cell stack. Based on Matlab/Simulink/Stateflow and xPC Target platform,a rapid control prototype(RCP) is developed for real-time condition management,signal tracking and parameter tuning,data storing,and man-machine interaction. In a typical running with 4.3 kW stack power,the hydrogen production efficiency,gross power generation efficiency and heat recovery efficiency approach to 76%,41% and 50%,respectively. The peak stack power reaches 7.3 kW. Though there is still considerable dis-tance to long-term operation at 10 kW-scale net power generation,it is a milestone for the PEMFC-based stationary application in China. | BAO Cheng SU Qingquan MI Wanliang LI Zhiyuan HI Quan JI Zhonghua LIU Zhixiang MAO Zongqiang | 2010 | Chinese Journal of Chemical Engineering2010，18，6： | 1 |
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