نتایج جستجو برای: hydrotalcite derived catalysts

تعداد نتایج: 513488  

Journal: :Physical chemistry chemical physics : PCCP 2016
M A González R Trócoli I Pavlovic C Barriga F La Mantia

Two different hydrotalcite-like compounds were prepared and used as substrates for the electrochemical removal of extremely toxic pollutant cations, such as Cd(ii) and Pb(ii), from aqueous solutions, and their subsequent recovery for further potential applications. By deposition on the hydrotalcite electrode, it was possible to remove 75% of Cd(ii) contained in a starting 5.2 mM solution of CdC...

2004
Eiji Hosono Shinobu Fujihara Itaru Honma Haoshen Zhou

Films of brucite-type cobalt hydroxide with nanorod morphology and hydrotalcite-type cobalt hydroxide with nanosheet morphology films were fabricated by heterogeneous nucleation in a chemical bath using water and a mixed solution of water–methanol as solvents, respectively. Since oxygen is around 25 times more soluble in methanol than in water, a methanol solution was used to convert a part of ...

2008
Stéphane Walspurger Paul D. Cobden Wim G. Haije Ruud W. van den Brink

Alkali promotion effects on CO2 sorption have been characterised by a series of complementary analytical techniques on γ-alumina, magnesia, hydrotalcites and alkaline promoted corresponding materials under conditions representative for WGS conditions. Alkaline carbonates are destabilised when interacting with solid surface as evidenced by thermogravimetric analyses and temperature programmed de...

2017
Rui-Qi Yang Hua Mao Li-Yun Huang Pei-Zhu Su Min Lu

AIM To evaluate the effects of hydrotalcite combined with esomeprazole on gastric ulcer healing quality. METHODS Forty-eight patients diagnosed with gastric ulcer between June 2014 and February 2016 were randomly allocated to the combination therapy group or monotherapy group. The former received hydrotalcite combined with esomeprazole, and the latter received esomeprazole alone, for 8 wk. Tw...

2006
SHIGEO MIYATA

Ahstraet--Hydrotalcite solid solutions were prepared by coprecipitation followed by hydrothermal treatment between 150 ~ and 250~C. Based on the structural formula [Mgl_xAlx(OH)~lX+l(COz)x/2 9 mH20] x-, pure solid solutions were formed in the range Al/(Al + Mg) = 0.2 to 0.33, where m = (1 3x/2). Maximum crystallite size was achieved by hydrothermal treatment between 180 ~ and 200~ with x = 0.33...

Journal: :Chemical communications 2010
Shoichiro Sueoka Takato Mitsudome Tomoo Mizugaki Koichiro Jitsukawa Kiyotomi Kaneda

Monomeric vanadium oxide species is created on the surface of hydrotalcite (V/HT), which acts as a reusable solid catalyst for the highly efficient dehydration of amides into the corresponding nitriles.

Journal: :Academic journal of science and technology 2022

Hydrotalcite-like compounds has layered structure and unique properties. Rich surface hydroxyl groups interlayer anions make it have excellent heavy metal adsorption capacity. The variable valence manganese element in the laminate gives good catalytic performance. This paper introduces concept, structure, preparation methods application of hydrotalcite-like detail, order to provide reference fo...

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