Formation of Ru active species by ion-exchange method for aqueous phase reforming of acetic acid. (5th January 2017)

• Record Type: Journal Article
• Authors: Nozawa, Toshiaki; Mizukoshi, Yuichi; Yoshida, Akihiro; Hikichi, Shiro; Naito, Shuichi
• Is Part Of: International journal of hydrogen energy. Volume 42:Number 1(2017)
• Page Start: 168
• Page End: 176
• Publication Date: 2017-01-05
• Subjects: Aqueous phase reforming -- Acetic acid -- Ruthenium -- Zeolite -- Ion-exchanging; Hydrogen as fuel -- Periodicals; Hydrogène (Combustible) -- Périodiques; Hydrogen as fuel; Periodicals; 665.81
• DOI: 10.1016/j.ijhydene.2016.10.028
• Languages: English
• ISSNs: 0360-3199

Abstract

Abstract: NaY-zeolite was employed as a support of ruthenium catalysts for aqueous phase reforming of acetic acid. Catalytic activities of the supported ruthenium species on NaY-zeolite depended on oxidation state controlled by preparation conditions. Catalyst NaY(exc), whose 5 wt% ruthenium precursors were supported through cation-exchanging process, produced H2 continuously for 10 h when the catalysts were used without reducing by H2 prior to usage. Decreasing the loading amounts of ruthenium on NaY(exc) led to improve the selectivity toward complete reforming of acetic acid giving H2 and CO2 because of the strong interaction between positively charged ruthenium particle and the support. However, contents of sodium cations controlled by the pH of precursor solutions did not affect the catalytic performances. Graphical abstract: Highlights: AcOH-APR over Ru/NaY-zeolite catalysts depend on preparation procedures. As–ion exchanged Ru/NaY(exe) can produce H2 selectively in AcOH-APR. Decrease of Ru loading improves selectivity for complete reforming of AcOH. Catalytic performance is not affected by contents of Na cations.