摘要
对共沉淀法制备的CuO/ZnO/CeO2-ZrO2催化剂在甲醇水蒸气重整制氢反应体系中的性能进行了考察,并利用统计学实验设计方法对该反应的反应条件进行了优化。选择反应温度、水醇比和甲醇气体空速为独立要因,利用全因子实验设计方法,得到反应温度对两个响应值(甲醇转化率和重整气中CO物质的量分数)的影响最为显著,甲醇气体空速对重整气中CO物质的量分数的影响最小。固定甲醇气体空速为300 h-1,利用中心旋转组合设计实验方法对反应温度和水醇比进行优化,得出当反应温度在249～258℃、水醇比在1.76～2.00时,甲醇能全部转化,重整气中CO物质的量分数小于0.5%。此模型的计算值与实验结果较为接近,表明采用统计学实验设计方法得出的结论对甲醇水蒸气重整制氢反应条件的优化具有指导意义。
The catalytic performance of CuO/ZnO/CeO2/ZrO2 prepared by co-precipitation for methanol steam reforming was investigated using a statistical set of experiments in order to optimize the reaction conditions for obtaining minimal carbon monoxide in the reformed gas. The reaction temperature, steam to methanol ratio, methanol gas hourly space velocity （GHSV） were evaluated with a full factorial design experiment. The reaction temperature displayed much greater influence on the response （methanol conversion and CO concentration in reformed gas）, GHSV has minimal influence on the CO concentration in reformed gas. At a fixed low methanol GHSV （300 h-1 ）, a central composite rotatable design was then used to approximate the optimal conditions by simultaneously considering the methanol conversion and were found to lie within a reaction temperature of 249 agreement with the experimental results. CO concentration. The optimum theoretical conditions - 258 ℃ and a W/M ratio of 1.76 - 2.00, in close
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2013年第1期116-122,共7页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金(21076206)
国家重点基础研究发展规划(973计划
2010CB732302)
国家高技术研究发展计划(863计划
2011AA050706)
关键词
全因子设计
中心旋转组合设计
响应曲面
甲醇水蒸气重整
氢气
优化
full factorial design
central composite rotatable design （CCRD）
response surface
methanolsteam reforming
hydrogen
optimization
