scholarly journals Atomic Origins of Strong Metal-Support Interaction in Silica Supported Catalysts

2021 ◽  
Author(s):  
Feng Yang ◽  
Haofei Zhao ◽  
Wu Wang ◽  
Lei Wang ◽  
Lei Zhang ◽  
...  
Keyword(s):  
Chemical Industry ◽  
High Stability ◽  
Supported Catalysts ◽  
Metal Catalysts ◽  
Supported Metal Catalysts ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Modern Chemical ◽  
Metal Support ◽  
Strong Metal Support Interaction

The silica supported metal catalysts are most widely used in the modern chemical industry because of the high stability and tunable reactivity. The strong metal-support interaction (SMSI), which has been...

scholarly journals Strong metal–support interaction of Ru on TiO2 derived from the co-reduction mechanism of RuxTi1−xO2 interphase

2021 ◽  
Author(s):  
Yaru Zhang ◽  
Haifeng Qi ◽  
Xiong Su ◽  
Yang Su ◽  
Xiao Yan Liu ◽  
...  
Keyword(s):  
Alternative Pathway ◽  
Metal Catalysts ◽  
Supported Metal Catalysts ◽  
Pretreatment Condition ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support ◽  
Co Reduction ◽  
Strong Metal Support Interaction ◽  
Supported Metal

Abstract Strong metal–support interaction (SMSI) plays a crucial role in determining the catalytic performances of supported metal catalysts, in which the subsequent migration of supports over the pre-existing metal nanoparticles is generally considered during the pretreatment condition. Herein, a distinct mechanism of SMSI generation by the co-reduction of oxide interphase is addressed over the Ru/TiO2 catalysts. Our results demonstrate that the formation of RuxTi1−xO2 oxide interphase can be facilely augmented by increasing the calcination temperature over Ru/TiO2 catalysts, while a growing encapsulation of TiOx overlayer on metallic Ru nanoparticles can be acquired in the following reduction of this oxide interphase. In contrast, the SMSI generation by the conventional mechanism is highly suppressed over the RuO2/TiO2 phase calcined at a low temperature. Thanks to this improved SMSI on Ru/TiO2 catalyst, it thus possesses an excellent performance in CO2 methanation, with a promoted CO2 conversion activity. Our findings suggest a different mechanism for the SMSI generation through the oxide interphase formation, and it also offers an alternative pathway to tune catalytic properties of supported metal catalysts.

scholarly journals Modulation of Superficial Electronic Structure via Metal-Support Interaction for H2 Evolution over Pd Catalysts

2021 ◽  
Author(s):  
Jin Wang ◽  
Dan Cheng ◽  
Mengmeng Gao ◽  
Qian Li ◽  
Ying Xin ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Metal Catalysts ◽  
Microscopic Level ◽  
Supported Metal Catalysts ◽  
H2 Evolution ◽  
Pd Catalysts ◽  
Electronic Interactions ◽  
Support Interaction ◽  
Metal Support Interaction ◽  
Metal Support

Electronic interactions can radically enhance the performance of supported metal catalysts and are critical for fundamentally understanding the nature of catalysts. However, at the microscopic level, the details of such...

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