Unveiling the Role of Zn/Zr Ratios in ZnO/ZrO2 Catalysts Prepared via Reverse Co-precipitation Method for Efficient CO2 to Methanol Conversion DOI Creative Commons

Thanapha Numpilai,

Nutkamaithorn Polsomboon,

Napaphut Dolsiririttigul

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

This study evaluates the catalytic performance of ZnO/ZrO2 catalysts, which were synthesized through reverse co-precipitation with Zn/(Zn + Zr) ratios varying from 0 to 100%, for converting CO2 into methanol (CH3OH). The catalysts underwent systematic characterization using XRD, TEM-EDS mapping, N2 adsorption-desorption, XPS, and TPD-MS techniques, focusing on both H2 interactions. Results showed that pure ZnO typically forms as aggregated needles, while ZrO2 manifests clustered aggregates significantly smaller nanoparticles. At lower Zn contents (20-30%), particles are small evenly distributed among nanoparticles, effectively inhibiting aggregation. Conversely, at higher (40-80%), increase in size, remain tend accumulate predominantly surfaces larger particles. Catalysts a predominance exhibited greater adsorption, whereas those increased adsorption. Zn60Zr40 (60 wt % Zn) catalyst was identified optimal, achieving 11.8% conversion 340 °C, peak CH3OH selectivity 74.0% 320 °C yield 6.1% maintaining excellent stability over 100 h. Furthermore, found direct correlation between activity gas adsorption: adsorption rates improved conversion, more influenced by These findings underscore importance adsorptive properties determining product distribution offer essential insights designing optimized efficient production hydrogenation.

Language: Английский

Influence of dissociated methanol gas direct injection pressure on the performance of methanol port injection engine DOI
Xiangyang Wang, Huili Dou, Liang Zhang

et al.

Energy, Journal Year: 2025, Volume and Issue: unknown, P. 135382 - 135382

Published: March 1, 2025

Language: Английский

Citations

0
Modulating surface micro-structures and active compositions of Fe-based catalysts by copper to boost CO2 hydrogenation to higher hydrocarbons DOI

MingHao Zhao,

Qingchen Zhao,

Yunpeng Zhang

et al.

Separation and Purification Technology, Journal Year: 2025, Volume and Issue: 371, P. 133383 - 133383

Published: May 5, 2025

Language: Английский

Citations

0
Unveiling the Role of Zn/Zr Ratios in ZnO/ZrO2 Catalysts Prepared via Reverse Co-precipitation Method for Efficient CO2 to Methanol Conversion DOI Creative Commons

Thanapha Numpilai,

Nutkamaithorn Polsomboon,

Napaphut Dolsiririttigul

et al.

ACS Omega, Journal Year: 2025, Volume and Issue: unknown

Published: May 13, 2025

This study evaluates the catalytic performance of ZnO/ZrO2 catalysts, which were synthesized through reverse co-precipitation with Zn/(Zn + Zr) ratios varying from 0 to 100%, for converting CO2 into methanol (CH3OH). The catalysts underwent systematic characterization using XRD, TEM-EDS mapping, N2 adsorption-desorption, XPS, and TPD-MS techniques, focusing on both H2 interactions. Results showed that pure ZnO typically forms as aggregated needles, while ZrO2 manifests clustered aggregates significantly smaller nanoparticles. At lower Zn contents (20-30%), particles are small evenly distributed among nanoparticles, effectively inhibiting aggregation. Conversely, at higher (40-80%), increase in size, remain tend accumulate predominantly surfaces larger particles. Catalysts a predominance exhibited greater adsorption, whereas those increased adsorption. Zn60Zr40 (60 wt % Zn) catalyst was identified optimal, achieving 11.8% conversion 340 °C, peak CH3OH selectivity 74.0% 320 °C yield 6.1% maintaining excellent stability over 100 h. Furthermore, found direct correlation between activity gas adsorption: adsorption rates improved conversion, more influenced by These findings underscore importance adsorptive properties determining product distribution offer essential insights designing optimized efficient production hydrogenation.

Language: Английский

Citations

0