Publications by authors named "Zhounan Yu"

Transition metal carbide shows excellent performance in selective hydrogenation of acetylene, however, the carburization of Pd-based intermetallic compounds remains infeasible. Here we report the successful synthesis of an unprecedented PdZnC intermetallic carbide, via co-infiltration of zinc and carbon in one-step carburization by syngas. Utilizing state-of-the-art in situ characterizations and theoretical calculation, we unveil the dynamic evolution of PdZnC during carburization, forming a PdZn like cubic phase carbide structure.

View Article and Find Full Text PDF

Dual-atom catalysts (DACs) are promising for applications in electrochemical CO reduction due to the enhanced flexibility of the catalytic sites and the synergistic effect between dual atoms. However, precisely controlling the atomic distance and identifying the dual-atom configuration of DACs to optimize the catalytic performance remains a challenge. Here, the Ni and Fe atomic pairs were constructed on nitrogen-doped carbon support in three different configurations: NiFe-isolate, NiFe-N bridge, and NiFe-bonding.

View Article and Find Full Text PDF
Article Synopsis
  • - The hydroformylation reaction is a widely used industrial process, but it faces challenges with the costly separation and recovery of catalysts, making heterogeneous single-atom catalysts (SACs) a promising alternative.
  • - The study investigates the stability issues of Rh SACs, specifically focusing on how they aggregate and leach during reactions, influenced by various adsorbates like CO, H, alkenes, and aldehydes, using advanced techniques like infrared spectroscopy and electron microscopy.
  • - Findings indicate that CO and aldehydes can lead to Rh aggregation and leaching by weakening its bond with support materials, while high concentrations of alkenes can prevent these issues, allowing Rh to remain stable for over 100 hours during
View Article and Find Full Text PDF

Photocatalytic selective oxidation under visible light presents a promising approach for the sustainable transformation of biomass-derived wastes. However, achieving both high conversion and excellent selectivity poses a significant challenge. In this study, two valuable trioses, glyceraldehyde and dihydroxyacetone, are produced from glycerol over Cu -decorated WO photocatalyst in the presence of H O .

View Article and Find Full Text PDF

Ethylene methoxycarbonylation (EMC) to methyl propanoate (MP) is an industrially important reaction and commercially uses a homogeneous Pd-phosphine organometallic complex as the catalyst and corrosive strong acid as the promoter. In this work, we develop a Pt/MoS heterogeneous single-atom catalyst (SAC) which exhibits high activity, selectivity, and good recyclability for EMC reaction without need of any liquid acid. The production rate of MP achieves 0.

View Article and Find Full Text PDF

A PHP Error was encountered

Severity: Warning

Message: fopen(/var/lib/php/sessions/ci_session78lgemaubrs15a7rkhdiuo8mh8d86vn0): Failed to open stream: No space left on device

Filename: drivers/Session_files_driver.php

Line Number: 177

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once

A PHP Error was encountered

Severity: Warning

Message: session_start(): Failed to read session data: user (path: /var/lib/php/sessions)

Filename: Session/Session.php

Line Number: 137

Backtrace:

File: /var/www/html/index.php
Line: 316
Function: require_once