文献类型：期刊文献

中文题名：活性炭对CFC-113加氢脱氯Cu-Pd催化剂反应性能的影响

英文题名：Effect of activated carbon on reaction performance of CFC-113 Cu-Pd catalyst for hydrochlorination

作者：申宝林[1];廖湘洲[2];施云海[1]

机构：[1]华东理工大学化学工程研究所,上海200237;[2]上海化工研究院有限公司,上海200062

年份：2024

卷号：53

期号：1

起止页码：82

中文期刊名：应用化工

外文期刊名：Applied Chemical Industry

收录：CSTPCD;;北大核心:【北大核心2023】；CSCD:【CSCD_E2023_2024】；

基金：上海市2021年度“科技创新行动计划”(21XD1432200)。

语种：中文

中文关键词：活性炭载体;铜钯催化剂;加氢脱氯

外文关键词：activated carbon carrier;copper palladium catalyst;hydrochlorination

摘要：以木制炭AC-1、沥青炭AC-2为载体,制备负载Cu-Pd双组分催化剂,用于三氟三氯乙烷(CFC-113)加氢脱氯制备三氟氯乙烯(CTFE),发现两种载体催化剂均表现出较高的初始活性,但AC-2催化剂在短时间内迅速失活。化学吸附和XRD表明,AC-1催化剂具有更高的Pd分散度,Cu晶粒尺寸相对较大;XPS和TPR分析表明,AC-2催化剂表面金属还原温度低于AC-1,但后者表现出更集中的Cu物种分布。载体表面官能团的不同会导致催化剂反应性能的差异,AC-2表面较高的羧基浓度有利于Cu的吸附和分散,但Cu在反应过程中易受HCl的作用而产生物种以及价态的变化,而木制炭催化剂稳定性优于沥青炭可能与其表面较为单一、集中分布的Cu物种有关。
Using wood carbon AC-1 and pitch carbon AC-2 as carriers,the supported Cu-Pd dual-component catalyst was prepared.The catalyst was applied to the hydrogenation and dechlorination of trifluorotrichloroethane(CFC-113)to prepare trifluorochloroethylene(CTFE).It was found that the two carrier catalysts showed high initial activity,but the AC-2 catalyst was rapidly deactivated in a short time.Chemical adsorption and XRD showed that AC-1 catalyst had higher Pd dispersion and larger Cu grain size;further XPS and TPR analysis showed that the metal reduction temperature on the surface of AC-2 catalyst was lower than that of AC-1,but the latter showed a more concentrated distribution of Cu species.The different functional groups on the surface of the support will lead to the difference in the reaction performance of the catalyst.The higher carboxyl concentration on the surface of AC-2 is conducive to the adsorption and dispersion of Cu,but Cu is prone to change in species and valence due to the action of HCl in the reaction process.The stability of wooden carbon catalyst is better than that of asphalt carbon,which may be related to the relatively single and concentrated distribution of Cu species on the surface.