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首页> 外文会议>International Technical Conference on Clean Coal and Fuel Systems >THE INFLUENCE OF DIFFERENT SUPPORTS AND PROMOTERS ON THE CATALYTIC ACTIVITY OF COPPER BASED WATER GAS SHIFT CATALYSTS
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THE INFLUENCE OF DIFFERENT SUPPORTS AND PROMOTERS ON THE CATALYTIC ACTIVITY OF COPPER BASED WATER GAS SHIFT CATALYSTS

机译：不同载体和启动子对基于铜水煤气变换催化剂催化活性的影响

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The catalytic activity, metal-support interaction, and promoting effect of the water gas shift (WGS) reaction over copper based catalysts with different supports and promoters were studied. Four sets of samples (PC-A～D) with different supports and promoters (ZrO_2, CeO_2, etc.) were prepared by spray drying method for sorption-enhanced water gas shift (SEWGS) process which consists of circulating fluidized-bed reactor in pre-combustion Carbon Capture & Sequestration (CCS) technology. Catalysts were composed of copper as an active metal, supports, promoters, inorganic binders, and so on. Spray dried catalysts were calcined at 823 K under air for 3 hr. The physical properties of the catalysts were measured by standard ASTM methods. Particularly, the attrition resistance of catalysts to apply fluidized-bed process was measured with a modified three-hole air-jet attrition tester based on the ASTM D 5757-95. The catalytic activity was investigated by multi-channel catalytic reactor. After activation with hydrogen, WGS reaction was carried out at 573 K and 20 bar by feeding a gas mixture of CO, H_2O with the molar ratio of H_2O/CO=2. In the attrition resistance test, PC-D catalyst satisfied physical properties as the basic requirements for fluidized-bed process. PC-D catalyst which added ZrO_2 also showed highest catalytic activity which was estimated the nearly 95% CO conversion rate at temperature of 573 K. This result suggested that the performance of the catalyst is mainly linked to the good metal-support interaction between metallic copper and metal oxide within the catalyst and promoting effect by additives.
机译：研究了催化活性，金属载体相互作用和促进水的燃气换算（WGS）反应在具有不同载体和启动子的铜基催化剂上的反应。通过喷雾干燥方法为吸附增强的水气体移位（SEWGS）工艺进行喷雾干燥方法，制备具有不同支撑和启动子（ZRO_2，CEO_2等）的四组样品（PC-A〜D）。由循环流化床反应器组成预燃烧碳捕获和封存（CCS）技术。催化剂由铜作为活性金属，载体，促进剂，无机粘合剂等组成。将喷雾干燥的催化剂在空气中煅烧823k 3小时。通过标准ASTM方法测量催化剂的物理性质。特别地，基于ASTM D 5757-95，用改性的三孔空气喷射磨损测试仪测量催化剂的耐催化剂的磨损性。通过多通道催化反应器研究了催化活性。在用氢气激活后，通过使用H_2O / CO = 2的摩尔比进给CO，H_2O的气体混合物，在573k和20巴下进行Wgs反应。在磨损性试验中，PC-D催化剂满足物理性质作为流化床过程的基本要求。添加ZrO_2的PC-D催化剂还显示出最高的催化活性，其估计在573k的温度下估计近95％的CO转化率。该结果表明催化剂的性能主要与金属铜之间的良好金属 - 载体相互作用相关联和催化剂内的金属氧化物和添加剂的促进作用。

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