Platinum Nanoparticles Supported on Activated Carbon Catalysts for the Gas-Phase Hydrodechlorination of Dichloromethane: Influence of Catalyst Composition and Operating Conditions

Nanomaterials and Nanotechnology

Luisa María Gómez-Sainero¹  María Ariadna Álvarez-Montero¹  Juan Jose Rodriguez¹ 

关键词: Atmospheric Pollution;    Dichloromethane;    Hydrodechlorination;    Platinum;    Nanoparticles;    Carbon;    Catalysts;   

DOI  :  10.5772/62593

来源: InTech

【 摘 要 】

DCM is classified among the most hazardous atmospheric pollutants and therefore, the development of safe methods for the disposal of residual DCM is of great importance. Activated carbon- supported catalysts containing platinum nanoparticles as the active phase, with a high proportion of metal in the zero-valent state, were prepared in order to obtain catalysts of high performance in the gas-phase hydrodechlorination (HDC) of dichloromethane (DCM). Catalysts with Pt particles of sizes as low as 1.6 nm per average metal particle were obtained, leading to a high effectiveness in the dechlorination of effluent. All catalysts showed high initial dechlorination activity; however, a lower surface acidity in the support led to a higher stability of the conversion during the operation, as it avoids coke formation. When increasing metal load up to 2% (w/w), platinum nanoparticles of similar sizes originated, while a greater amount of Pt0 was obtained; this process therefore improved dechlorination activity to a si...

【 授权许可】

Unknown