Superhydrophobic Pt@SBA-15 catalyst for hydrogen water isotope exchange reactions. (12th May 2022)

• Record Type: Journal Article
• Authors: Lu, Zengqi; Li, Jiamao; Fu, Xiaolong; Hou, Jingwei; Ran, Guangming; Xiao, Chengjian; Wang, Xiaolin
• Is Part Of: International journal of hydrogen energy. Volume 47:Number 41(2022)
• Page Start: 18080
• Page End: 18087
• Publication Date: 2022-05-12
• Subjects: Superhydrophobic catalyst -- Hydrogen isotope exchange -- Microscopic reaction environment; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2022.03.279
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: In this work, Santa Barbara amorphous-15 (SBA-15) mesoporous silica was modified to fabricate hydrophobic microscopic reaction environments that enhanced the catalytic activity of the liquid phase catalytic exchange (LPCE) reaction. The hydrophobicity or hydrophilicity of the environments synthesized using modified SBA-15 was verified by conducting N2 and water vapor adsorption-desorption experiments. A porous composite catalyst, Pt@SBA-15-x/PVDF, was synthesized via a two-solvent method. The water contact angle of Pt-modified SBA-15 was 152°, proving its superhydrophobicity and granting it excellent catalytic performance for LPCE techniques in hydrogen-water isotope exchange processes. The catalytic performance of the hydrophobic catalyst did not decrease significantly after 30 days of usage. Highlights: The superhydrophobic catalyst on SBA-15 support was synthesized used a silane coupling agent to modify SBA-15 support. The wetting property of synthesized catalysts Pt@SBA-15-х was over 150°. The specific surface area, pore size and the chemical oxidation state of platinum on the catalysts surface were estimated. The performance and stability in LPCE process of synthesized catalysts were investigated.