| Texto completo | |
| Autor(es): |
Arpini, Bruno Henrique
;
Fiorio, Jhonatan Luiz
;
da Costa, Joao Victor Ferreira
;
Joswig, Jan-Ole
;
Rossi, Liane Marcia
Número total de Autores: 5
|
| Tipo de documento: | Artigo Científico |
| Fonte: | CATALYSIS SCIENCE & TECHNOLOGY; v. 14, n. 4, p. 9-pg., 2024-01-17. |
| Resumo | |
Improving the catalytic efficiency of earth-abundant metals, such as nickel, through surface design has the potential to replace noble-metal-based catalysts. Here, we report that coating nickel with nitrogen-doped carbon (Ni@NC) enhances its stability and activity for the semi-hydrogenation of phenylacetylene under mild conditions. Mechanistic studies with substituted phenylacetylenes revealed an electronic effect that suggests a contribution of the homolytic cleavage of H2 followed by hydrogen spillover to the N-doped carbon coating. As a result, the hydrogenation reaction occurs at temperatures as low as 25 degrees C, while the benchmark RANEY (R) nickel is inactive. These results are supported by a combination of experimental results and theoretical insights. Moreover, this efficient hydrogenation catalyst is resistant to carbon monoxide poisoning and remains active even at low temperatures. Ni@N-doped carbon exhibits superior hydrogenation activity than RANEY (R) nickel. The high activity was attributed to hydrogen spillover from Ni to N-doped carbon, which also enhances CO poisoning resistance. (AU) | |
| Processo FAPESP: | 20/15230-5 - Centro de Pesquisa e Inovação de Gases de Efeito Estufa - RCG2I |
| Beneficiário: | Julio Romano Meneghini |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 18/26253-6 - Catálise cooperativa: uma alternativa para o desenvolvimento de catalisadores a base de ouro e metais de transição abundantes |
| Beneficiário: | Liane Marcia Rossi |
| Modalidade de apoio: | Auxílio à Pesquisa - Regular |
| Processo FAPESP: | 17/24348-7 - Desenvolvimento de catalisadores híbridos para a conversão de CO2 em produtos químicos e combustíveis |
| Beneficiário: | Bruno Henrique Arpini |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 14/50279-4 - Brasil Research Centre for Gas Innovation |
| Beneficiário: | Julio Romano Meneghini |
| Modalidade de apoio: | Auxílio à Pesquisa - Programa Centros de Pesquisa Aplicada |
| Processo FAPESP: | 21/00675-4 - Arquitetura de materiais para armazenamento de energia eletroquímica e catálise |
| Beneficiário: | Roberto Manuel Torresi |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |