三种用于水氢交换的Pt/疏水陶瓷催化剂
Three Kinds of Pt/Ceramic Hydrophobic Catalysts Used in H2O/H2 Exchange Reaction
摘要: 研究选用了三种不同的疏水陶瓷载体(其主要原料分别为ZrO2、SiO2及SiC)，采用浸渍还原法，制得了用于水氢同位素交换分离的Pt/疏水陶瓷催化剂。研究通过XRD、SEM、压汞仪及化学吸附仪等对载体及制得的催化剂进行表征，采用气汽并流方式测得催化剂交换效率，考察此三种由不同原料烧制的陶瓷载体对制得催化剂的影响。研究结果表明，以ZrO2为原料制得的陶瓷载体，载体结构适宜且稳定性好，最适宜作为载体制备催化剂。制得的催化剂在0.1 m/s气速下其催化交换效率可达31.2%，冲淋4周后催化剂活性几乎无变化。
Abstract: Three kinds of porous hydrophobic ceramic carriers which made from different ceramic powder (ZrO2, SiO2 and SiC) were adopted in this study, and then the Pt/ceramic hydrophobic catalyst which used in H2O/H2 exchange reaction were fabricated through convenient impregnation method. All the catalysts and carriers were characterized by XRD, SEM, H2-TPR and CO adsorption and the catalytic activity were tested through catalytic exchange reaction between hydrogen and saturated water vapor. The results showed that the ZrO2 carrier with most suitable and stable pore structure would benefit the catalytic activity, the catalytic activity could reach to 31.2% at 0.1 m/s gas speed, the catalyst activity almost kept unchanged after being flushed by water for 4 weeks.
文章引用：贾青青, 胡石林, 刘亚明. 三种用于水氢交换的Pt/疏水陶瓷催化剂[J]. 核科学与技术, 2020, 8(3): 69-76. https://doi.org/10.12677/NST.2020.83008

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