A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Catalytic Methane Mitigation Over Mesoporosity-Engineered Hierarchically Porous Pd/SSZ-13 Zeolites
https://orcid.org/0000-0002-6118-0573
https://orcid.org/0000-0001-9919-990X
https://orcid.org/0000-0003-1014-8044
Palladium-zeolites are active catalysts for abating methane (CH4), the second largest greenhouse gas contributing to climate change, via catalytic combustion. Yet, it remains challenging to improve the activity of Pd-zeolites in CH4 combustion, in particular under humid conditions. Here, using small-pore SSZ-13 zeolite as a showcase, we demonstrate mesoporosity engineering as an effective approach to boost the CH4 combustion performance of Pd-zeolites. A newly designed gemini quaternary ammonium surfactant, namely C18–4N2MP, was fabricated using inexpensive reagents and employed as a mesoporogen in the hydrothermal synthesis of hierarchically micro–meso–macro–porous SSZ-13 product. High-dispersion Pd catalysts were achieved by using the hierarchically porous SSZ-13 zeolites as supports. Physicochemical characterization and reaction kinetics disclosed that rational mesoporosity engineering of the hierarchically porous SSZ-13, simply by optimizing C18–4N2MP addition in the precursor gel prior to hydrothermal crystallization, favored the formation of highly dispersed PdO x active phase and, in turn, the CH4 combustion without noticeable accumulation of carbonaceous intermediates on the surface. Additionally, mesoporosity-optimized Pd/SSZ-13 displayed improved durability and outstanding moisture resistance during CH4 combustion. This study sheds new light on the fabrication of high-performance Pd-zeolite catalysts for CH4 emission abatement by facile engineering of zeolite mesoporosity.
Catalytic Methane Mitigation Over Mesoporosity-Engineered Hierarchically Porous Pd/SSZ-13 Zeolites
https://orcid.org/0000-0002-6118-0573
https://orcid.org/0000-0001-9919-990X
https://orcid.org/0000-0003-1014-8044
Palladium-zeolites are active catalysts for abating methane (CH4), the second largest greenhouse gas contributing to climate change, via catalytic combustion. Yet, it remains challenging to improve the activity of Pd-zeolites in CH4 combustion, in particular under humid conditions. Here, using small-pore SSZ-13 zeolite as a showcase, we demonstrate mesoporosity engineering as an effective approach to boost the CH4 combustion performance of Pd-zeolites. A newly designed gemini quaternary ammonium surfactant, namely C18–4N2MP, was fabricated using inexpensive reagents and employed as a mesoporogen in the hydrothermal synthesis of hierarchically micro–meso–macro–porous SSZ-13 product. High-dispersion Pd catalysts were achieved by using the hierarchically porous SSZ-13 zeolites as supports. Physicochemical characterization and reaction kinetics disclosed that rational mesoporosity engineering of the hierarchically porous SSZ-13, simply by optimizing C18–4N2MP addition in the precursor gel prior to hydrothermal crystallization, favored the formation of highly dispersed PdO x active phase and, in turn, the CH4 combustion without noticeable accumulation of carbonaceous intermediates on the surface. Additionally, mesoporosity-optimized Pd/SSZ-13 displayed improved durability and outstanding moisture resistance during CH4 combustion. This study sheds new light on the fabrication of high-performance Pd-zeolite catalysts for CH4 emission abatement by facile engineering of zeolite mesoporosity.
Catalytic Methane Mitigation Over Mesoporosity-Engineered Hierarchically Porous Pd/SSZ-13 Zeolites
https://orcid.org/0000-0002-6118-0573
https://orcid.org/0000-0001-9919-990X
https://orcid.org/0000-0003-1014-8044
Palladium-zeolites are active catalysts for abating methane (CH4), the second largest greenhouse gas contributing to climate change, via catalytic combustion. Yet, it remains challenging to improve the activity of Pd-zeolites in CH4 combustion, in particular under humid conditions. Here, using small-pore SSZ-13 zeolite as a showcase, we demonstrate mesoporosity engineering as an effective approach to boost the CH4 combustion performance of Pd-zeolites. A newly designed gemini quaternary ammonium surfactant, namely C18–4N2MP, was fabricated using inexpensive reagents and employed as a mesoporogen in the hydrothermal synthesis of hierarchically micro–meso–macro–porous SSZ-13 product. High-dispersion Pd catalysts were achieved by using the hierarchically porous SSZ-13 zeolites as supports. Physicochemical characterization and reaction kinetics disclosed that rational mesoporosity engineering of the hierarchically porous SSZ-13, simply by optimizing C18–4N2MP addition in the precursor gel prior to hydrothermal crystallization, favored the formation of highly dispersed PdO x active phase and, in turn, the CH4 combustion without noticeable accumulation of carbonaceous intermediates on the surface. Additionally, mesoporosity-optimized Pd/SSZ-13 displayed improved durability and outstanding moisture resistance during CH4 combustion. This study sheds new light on the fabrication of high-performance Pd-zeolite catalysts for CH4 emission abatement by facile engineering of zeolite mesoporosity.
Catalytic Methane Mitigation Over Mesoporosity-Engineered Hierarchically Porous Pd/SSZ-13 Zeolites
Liang, Gaozhou (author) / Guo, Anqi (author) / Xiong, Wuwan (author) / Chen, Dongdong (author) / Simon, Ulrich (author) / Ye, Daiqi (author) / Huang, Haibao (author) / Chen, Peirong (author)
ACS ES&T Engineering ; 4 ; 2734-2744
2024-11-08
Article (Journal)
Electronic Resource
English
CO"2 adsorption on LTA zeolites: Effect of mesoporosity
| British Library Online Contents | 2014
Generation of mesoporosity in MOR zeolites synthesized under perturbation conditions
| British Library Online Contents | 2011
Hierarchically Nanostructured Porous Functional Ceramics
| British Library Online Contents | 2007