TY - JOUR
T1 - Effects of Cu Precursor Types on the Catalytic Activity of Cu/ZrO2 toward Methanol Synthesis via CO2 Hydrogenation
AU - Tada, Shohei
AU - Oshima, Kazumasa
AU - Noda, Yoshihiro
AU - Kikuchi, Ryuji
AU - Sohmiya, Minoru
AU - Honma, Tetsuo
AU - Satokawa, Shigeo
N1 - Funding Information:
This work was supported by the Japan Society for the Promotion of Science (JSPS, nos. 15J10157 and 18K04838) and The Japan Petroleum Institute. The synchrotron radiation experiments were performed at the BL14B2 of SPring-8 with the approval of the Japan Synchrotron Radiation Research Institute (JASRI, proposal no. 2018B1552). We are grateful to Prof. Ken-ichi Shimizu, Dr. Takashi Toyao, and Dr. Kenichi Kon, Hokkaido University, for their kind help with STEM analysis. The authors thank Prof. Hsueh-Ju Liu, National Chiao Tung University, Taiwan, for the discussion about Cu2+ coordination structures.
Publisher Copyright:
Copyright © 2019 American Chemical Society.
PY - 2019/10/23
Y1 - 2019/10/23
N2 - This paper presents the influence of different types of copper precursors on CO2-to-methanol hydrogenation over copper nanoparticles on amorphous ZrO2. Here, we chose copper nitrate hydrate, copper acetate hydrate, and a copper ammine complex as the precursor. A copper-acetate-based catalyst, which was precalcined at 350 °C, was more active and selective toward methanol than were the other catalysts. Regardless of the different copper precursors, after calcining a mixture of a copper precursor and amorphous ZrO2 at 350 °C, surface-dispersed Cu2+ species ([CuO4] square planes) were partly formed on amorphous ZrO2. The Cu2+ species was reduced by H2 to form Cu nanoparticles (<5 nm). This paper reports that using copper acetate monohydrate as a copper precursor leads to the greater number of active sites (Cu-a-ZrO2 interfacial sites) compared with the other precursors.
AB - This paper presents the influence of different types of copper precursors on CO2-to-methanol hydrogenation over copper nanoparticles on amorphous ZrO2. Here, we chose copper nitrate hydrate, copper acetate hydrate, and a copper ammine complex as the precursor. A copper-acetate-based catalyst, which was precalcined at 350 °C, was more active and selective toward methanol than were the other catalysts. Regardless of the different copper precursors, after calcining a mixture of a copper precursor and amorphous ZrO2 at 350 °C, surface-dispersed Cu2+ species ([CuO4] square planes) were partly formed on amorphous ZrO2. The Cu2+ species was reduced by H2 to form Cu nanoparticles (<5 nm). This paper reports that using copper acetate monohydrate as a copper precursor leads to the greater number of active sites (Cu-a-ZrO2 interfacial sites) compared with the other precursors.
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U2 - 10.1021/acs.iecr.9b03627
DO - 10.1021/acs.iecr.9b03627
M3 - Article
AN - SCOPUS:85073220281
VL - 58
SP - 19434
EP - 19445
JO - Industrial & Engineering Chemistry Research
JF - Industrial & Engineering Chemistry Research
SN - 0888-5885
IS - 42
ER -