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镍基催化剂对CO-超临界水制氢固碳反应的影响
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作者 田冲 赵永椿 +3 位作者 张军营 晏恒 吕涛涛 郑楚光 《动力工程学报》 CAS CSCD 北大核心 2011年第11期869-874,共6页
利用水热法制备镍基催化剂Ni/ZrO2-CeO2-Al2O3,并采用X-射线衍射仪和X-射线荧光能谱仪对其组分进行表征.在高温高压反应釜中,同时添加镍基催化剂和固碳剂(硅灰石)的条件下进行CO-超临界水气转化(WGS)试验,分别考察温度、压力等因素对CO... 利用水热法制备镍基催化剂Ni/ZrO2-CeO2-Al2O3,并采用X-射线衍射仪和X-射线荧光能谱仪对其组分进行表征.在高温高压反应釜中,同时添加镍基催化剂和固碳剂(硅灰石)的条件下进行CO-超临界水气转化(WGS)试验,分别考察温度、压力等因素对CO-超临界水气化反应的影响及探究制氢固碳的可行性.结果表明:添加催化剂Ni/ZrO2-CeO2-Al2O3能同时提高制氢效率和矿化效率,相同工况下添加催化剂时制氢效率最大可提高8%,矿化效率最大可提高8.2%;CO初压为4 MPa、温度为420℃时,添加1 g催化剂和10 g硅灰石,制氢效率可达到16.8%;CO初压为6 MPa、温度为400℃时,添加相同样品的工况下,CO2矿化效率达到38.1%;在存在催化剂Ni/ZrO2-CeO2-Al2O3的WGS反应中,CO初压对CO2矿化影响较大,而温度对制氢效率的影响较大. 展开更多
关键词 Ni/ZrO2-CeO2-Al2O3 制氢固碳 水气转换 CO-超临界水 硅灰石
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A micro-sphere catalyst complex with nano CaCO_3 precursor for hydrogen production used in ReSER process 被引量:6
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作者 Wu Sufang Li Lianbao Zhu Yanqing Wang Xieqing 《Engineering Sciences》 EI 2010年第1期22-26,共5页
This paper describes the preparation and evaluation of a micro-sphere catalytic complex for the hydrogen production in a Reactive Sorption Enhanced Reforming (ReSER) process. The catalytic complex made by a spray te... This paper describes the preparation and evaluation of a micro-sphere catalytic complex for the hydrogen production in a Reactive Sorption Enhanced Reforming (ReSER) process. The catalytic complex made by a spray technique has a dual function containing Ni as a catalytic material and CaO as an adsorption material used in the ReSER process. The attrition characteristics of the catalytic complex are acceptable for the commercial used. The nano GaCO3 material used as a precursor of CaO showed a desirable durability with a CO2 sorption capacity of 0.6 mol CO2/kg after 10 repeating cycles under the carbonation temperature of 600 ℃, a CO2 partial pressure of 0.02 MPa, and a calcination temperature of 750 ℃ in N2 measured by a thermal gravimetric analyzer. The testing of the catalytic complex for ReSER showed a hydrogen yield of over 95 % (v/v) in the laboratory fixed fluidized bed reactor. The catalytic system has an attractive prospect in the ReSER process for hydrogen production, especially in the fluidized mode where reactor and regenerator combined in a cycling process. 展开更多
关键词 hydrogen nano calcium carbonate ADSORPTION catalytic activation reaction engineering stability
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