Catalysis Communications ( IF 3.7 ) Pub Date : 2018-10-19 , DOI: 10.1016/j.catcom.2018.10.014 Chunzheng Wang , Weisong Xu , Zhengxing Qin , Svetlana Mintova
Nanoporous palladium (np-Pd) is deposited spontaneously on microfibrous-structured Al-fibers (np-Pd/Al-fiber catalyst) via the galvanic replacement between Pd2+ and aluminium metal (2 Al + 3 Pd2+ → 2 Al3+ + 3 Pd). The np-Pd/Al-fiber catalyst combines the high activity and good stability of the np-Pd with the excellent heat conductivity and large permeability of the microfibrous-structured Al-fibers. The np-Pd/Al-fiber catalyst shows four times higher intrinsic activity (i.e., turnover frequency) than the conventional Pd/α-Al2O3 catalyst. The unique nanoporous palladium with interpenetrating network of nanoligaments is responsible for the improved activity in the CO oxidative coupling to dimethyl oxalate (2 CH3ONO + 2 CO → 2 NO + CH3OCOCOOCH3).
中文翻译:
纳米多孔Pd在微纤维结构Al纤维上的自发电沉积,用于CO氧化偶联至草酸二甲酯
纳米孔钯(np-Pd)通过Pd 2+与铝金属(2 Al + 3 Pd 2 + →2 Al 3)之间的电置换自发沉积在微纤维结构Al纤维(np-Pd / Al-纤维催化剂)上。+ + 3的Pd)。np-Pd / Al纤维催化剂兼具np-Pd的高活性和良好的稳定性以及微纤维结构化Al纤维的优异的导热性和大的渗透性。比常规的Pd /α-Al系的NP-的Pd /铝纤维催化剂显示出高四倍固有活性(即,转换频率)2 ö 3催化剂。具有纳米配位体互穿网络的独特纳米多孔钯负责改善与草酸二甲酯(2 CH 3 ONO + 2 CO→2 NO + CH 3 OCOCOOCH 3)的CO氧化偶联活性。