| Abstract |
To reveal the influences of S atom and nanoparticle size in the S-modified Cu and Pd (Cu-S and Pd-S) nanoparticle catalysts on C2H2 semi-hydrogenation performance, the S-modified Mn (M = Cu and Pd, n = 13, 38, 55) catalysts and the periodic M(1 1 1) surface representing much larger size of nanoparticle were constructed to examine C2H2 semi-hydrogenation. The results showed that C2H4 selectivity over Cu-S catalysts is higher than that over Pd-S catalysts, while C2H4 formation rate is lower over Cu-S catalysts. Compared with the pure M catalysts, the S-modified M catalysts enhance C2H4 selectivity due to the geometric and electronic effects. The screened larger nanoparticle size of Cu(1 1 1)-S catalyst is more suitable for C2H2 semi-hydrogenation. Hence, the electronic and geometric effects of S-modified metal catalysts can be controlled by tuning the nanoparticle size and spatial scale of active site induced by S atoms, then, the catalytic performance of C2H2 semi-hydrogenation could be regulated. |
| Authors |
Xiuxiu Shao , Qianqian Wang  , Maohong Fan  , Lixia Ling , Riguang Zhang
|
| Journal Info |
Elsevier BV | Chemical Engineering Science , vol: 270
, pages: 118494 - 118494
|
| Publication Date |
1/18/2023 |
| ISSN |
0009-2509 |
Type |
article |
| Open Access |
closed
|
| DOI |
https://doi.org/10.1016/j.ces.2023.118494 |
| Keywords |
Heterogeneous Catalysts (Score: 0.500283)
|
