Nano-gold supported on Fe2O3: A highly active catalyst for low temperature oxidative destruction of methane green house gas from exhaust/waste gases

Choudhary, Vasant R.; Patil, Vijay P.; Jana, Prabhas; Uphade, Balu S.

doi:10.1016/j.apcata.2008.08.008

Cited by 61 publications

(29 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, we have reported the use of nano-gold supported on MgO and other metal oxides for the reduction of oxygen by hydroxylamine or its salts for in situ production of hydrogen peroxide [36]. Very recently, we have observed that a nano-gold supported on Fe 2 O 3 by the HDP method shows very high catalytic activity for low temperature destruction of methane green house gas from exhaust/waste gases [37].…”

Section: Introductionmentioning

confidence: 98%

Supported Nano-Gold Catalysts for Epoxidation of Styrene and Oxidation of Benzyl Alcohol to Benzaldehyde

Choudhary

Dumbre

2009

Top Catal

View full text Add to dashboard Cite

Nano-gold particles supported on different alkaline earth oxides (viz. MgO, CaO, BaO and SrO), Gr. IIIa metal oxides (viz. Al 2 O 3, Ga 2 O 3, In 2 O 3 and Tl 2 O 3 ), transition metal oxides (viz), rare earth metal oxides ([all prepared by depositing gold on corresponding metal oxide support by deposition precipitation (DP) and/or homogeneous deposition precipitation (HDP) method] were evaluated for their catalytic performance in the liquid phase epoxidation of styrene by tert-butyl hydroperoxide (TBHP) to styrene oxide and also in the solvent-free benzyl alcohol-to-benzaldehyde oxidation (by molecular oxygen or TBHP) reactions. For the epoxidation, the catalytic performance (styrene oxide yield) of the most promising nano-gold catalysts prepared by the HDP method was in the following order: Au/MgO [

show abstract

Section: Introductionmentioning

confidence: 98%

Supported Nano-Gold Catalysts for Epoxidation of Styrene and Oxidation of Benzyl Alcohol to Benzaldehyde

Choudhary

Dumbre

2009

Top Catal

View full text Add to dashboard Cite

show abstract

“…11,12 Since the activity of the catalyst is highly dependent upon the support, the current study is intended to explore different supports for the reaction. Fe 2 O 3 has also been used for the various exhaust catalytic reactions [32][33][34] and the presence of Fe is reported to influence the catalytic activity of three-way catalysts. 35,36 There are relatively fewer reports on the use of vanadates as supports for catalytic materials.…”

Section: Introductionmentioning

confidence: 99%

Analysis of oxide and vanadate supports for catalytic hydrogen combustion: Kinetic and mechanistic investigations

2011

View full text Add to dashboard Cite

) were tested for catalytic hydrogen combustion. The compounds were characterized by X-ray diffraction and X-ray photoelectron spectroscopy. All the four compounds showed good activity and stability for catalytic hydrogen combustion and more than 95% conversion was observed over all the compounds within 500 C. The mechanisms for the reaction over the different classes of compounds (cerium-based and iron-based compounds) were proposed on the basis of spectroscopic observations. The main difference in the mechanisms was in the nature of adsorption of H 2 over the sites. The elementary processes for the reaction were proposed, corresponding rate expressions were derived, and the rate parameters for the reaction were estimated using nonlinear regression. Langmuir-Hinshelwood and Eley-Rideal mechanisms were also tested for the reaction and the proposed mechanism was compared with these mechanisms. V V C 2011 American Institute of Chemical Engineers AIChE J, 58: 932-945, 2012

show abstract

“…Moreover, during the past decade, many studies have established that nanosized Au-on-reducible support has a remarkable catalytic activity for many oxidation reactions [3][4][5][6][7][8][9]. In a previous work, we have shown that the gold catalyst supported on Ce-Ti mixed oxide prepared by deposition-precipitation method provides a small gold particle size and high catalytic activity in propene oxidation [10,11].…”

Section: Open Accessmentioning

confidence: 99%

“…The gold losses in case of Fe 6 Al 2 HT500 were explained because the pH of the solution was higher than IEP of iron oxide in order to deposit gold in the form of Au(OH) 3 . In this case, the support is likely to be negative, which leads it to adsorb only the gold cation form and leads to an increase in the losses of gold [3,8]. In order to investigate the structure of the samples, XRD patterns were performed ( Figure 1).…”

Section: +mentioning

confidence: 99%

See 1 more Smart Citation

Influence of Gold on Hydrotalcite-like Compound Catalysts for Toluene and CO Total Oxidation

et al. 2013

View full text Add to dashboard Cite

X 6 Al 2 HT500 hydrotalcites, where X represents Mg, Fe, Cu or Zn were synthetized and investigated before and after gold deposition for toluene and CO total oxidation reactions. The samples have been characterized by specific areas, XRD measurements and Temperature Programmed Reduction. Concerning the toluene total oxidation, the best activity was obtained with Au/Cu 6 Al 2 HT500 catalyst with T 50 at 260 °C. However, catalytic behavior of Au/X 6 Al 2 HT500 sample in both reactions depends mainly on the nature of the support.

show abstract

Nano-gold supported on Fe2O3: A highly active catalyst for low temperature oxidative destruction of methane green house gas from exhaust/waste gases

Cited by 61 publications

References 20 publications

Supported Nano-Gold Catalysts for Epoxidation of Styrene and Oxidation of Benzyl Alcohol to Benzaldehyde

Supported Nano-Gold Catalysts for Epoxidation of Styrene and Oxidation of Benzyl Alcohol to Benzaldehyde

Analysis of oxide and vanadate supports for catalytic hydrogen combustion: Kinetic and mechanistic investigations

Influence of Gold on Hydrotalcite-like Compound Catalysts for Toluene and CO Total Oxidation

Contact Info

Product

Resources

About