Zobrazeno 1 - 10
of 958
pro vyhledávání: '"Alfons Baiker"'
Autor:
Zichun Wang, Robert Buechel, Yijiao Jiang, Lizhuo Wang, Haimei Xu, Patrice Castignolles, Marianne Gaborieau, Olivier Lafon, Jean-Paul Amoureux, Michael Hunger, Alfons Baiker, Jun Huang
Publikováno v:
JACS Au, Vol 1, Iss 3, Pp 262-271 (2021)
Externí odkaz:
https://doaj.org/article/4197494454a8462f8ab20984ea5c36a0
Autor:
Zichun Wang, Tong Li, Yijiao Jiang, Olivier Lafon, Zongwen Liu, Julien Trébosc, Alfons Baiker, Jean-Paul Amoureux, Jun Huang
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-9 (2020)
Increasing the strength of silanols in silica-aluminas can promote their catalytic activity in various applications. Here, the authors present a synergistic effect of two neighboring Al sites on the same silanol group, which can enhance the strength
Externí odkaz:
https://doaj.org/article/fc76e65a908e42d69a30d3637bfab425
Autor:
Ammara Waheed, Xianwei Wang, Nobutaka Maeda, Daniel.M. Meier, Tamao Ishida, Toru Murayama, Masatake Haruta, Alfons Baiker
Publikováno v:
Catalysis Communications, Vol 148, Iss , Pp 106183- (2021)
Effects of supports (Co3O4, CeO2, NiO) in the gold-catalyzed aqueous phase oxidation of ethanol (EtOH) to acetic acid (AcOH) were examined. ATR-IR spectroscopy under working conditions of the catalysts uncovered on gold particles bidentate ethoxy, an
Externí odkaz:
https://doaj.org/article/d9ff59524d894ea3a1a074413d7138a3
Autor:
Zichun Wang, Yijiao Jiang, Olivier Lafon, Julien Trébosc, Kyung Duk Kim, Catherine Stampfl, Alfons Baiker, Jean-Paul Amoureux, Jun Huang
Publikováno v:
Nature Communications, Vol 7, Iss 1, Pp 1-5 (2016)
Until now, it has been believed that Brønsted acid sites in amorphous silica-alumina are formed from only tetra-coordinated (AlIV) sites. Here, the authors use 27Al-{1H} correlation NMR experiments to identify a new AlV-based Brønsted acid site, wi
Externí odkaz:
https://doaj.org/article/82c733f984ad403590c12d0a2c013984
Publikováno v:
CHIMIA, Vol 66, Iss 9 (2012)
Discrimination between active and spectator species is an important and demanding task in catalysis research. A comparative study of the Pd-catalyzed CO hydrogenation using in situ diffuse reflectance IR Fourier transform spectroscopy (DRIFTS) in ste
Externí odkaz:
https://doaj.org/article/15b9c623cded4d11b809ad5c037430c7
Publikováno v:
CHIMIA, Vol 64, Iss 3 (2010)
Gold nanoparticles supported on TiO2 were probed by adsorption of methyl mercaptane (MM), and the process was quantified gravimetrically. This method allowed discrimination between weakly adsorbed (physisorbed) and strongly bound (chemisorbed) methyl
Externí odkaz:
https://doaj.org/article/cd06b0930cc6474fa81ad69681150be4
Publikováno v:
CHIMIA, Vol 61, Iss 4 (2007)
Knowledge of the structure of active sites is a prerequisite for the rational design of solid catalysts. In situ attenuated total reflection infrared (ATR-IR) spectroscopy combined with site selective blocking by CO and isotope labeling allowed us to
Externí odkaz:
https://doaj.org/article/6c44ddc658a3485885bd2a74158c1f0b
Publikováno v:
CHIMIA, Vol 60, Iss 10 (2006)
Externí odkaz:
https://doaj.org/article/f3dac07b7f874600bd50dc7438837a4b
Publikováno v:
CHIMIA, Vol 60, Iss 4 (2006)
Polarization-modulation infrared reflection-absorption spectroscopy (Pm-irras) is a sensitive tool for the analysis of species residing at gas–solid and gas–liquid interfaces. the polarization-modulation allows excellent back-ground compensation
Externí odkaz:
https://doaj.org/article/d3e66b96c508455e8fc56111898eab7b
Publikováno v:
CHIMIA, Vol 56, Iss 10 (2002)
In search of highly active nanoparticles for catalytic applications, flame aerosol technology turns out to be a promising method for its capacity to consistently produce highly pure nanoparticles. Starting with the production of simple oxides such as
Externí odkaz:
https://doaj.org/article/d1b121eb89e84199b568779500fed5aa