@article { ISI:000242327500019,
	title = {Factors influencing decomposition of H2O2 over supported Pd catalyst in aqueous medium},
	journal = {Journal of Molecular Catalysis A-Chemical},
	volume = {260},
	number = {1-2},
	year = {2006},
	month = {DEC},
	pages = {115-120},
	publisher = {ELSEVIER SCIENCE BV},
	type = {Article},
	address = {PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS},
	abstract = {<p>Since H2O2 decomposition can result in selectivity/yield loss in the direct H2O2 synthesis process from H-2 and O-2 over supported Pd catalysts, it is important to have an enhanced understanding about the factors affecting the H2O2 decomposition reaction. Herein, detailed studies have been undertaken to investigate the influence of different factors, such as (a) nature and concentration of acid in reaction medium, (b) nature and concentration of halide in presence and absence of acid in reaction medium, (c) pretreatment procedures and (d) catalyst modification by incorporation of different halides, on the H2O2 decomposition reaction over a 5\% Pd/C catalyst in aqueous medium at 25 degrees C. This study has shown that the H2O2 decomposition activity is profoundly influenced by all the above factors. The effectiveness of the acids in suppressing the H2O2 decomposition activity decreased in the following order: hydroiodic acid \&gt; hydrobromic acid \&gt; hydrochloric acid \&gt;\&gt; acetic acid \&gt; phosphoric acid \&gt; sulfuric acid \&gt; perchloric acid. The ability of the acid to decrease the H2O2 decomposition activity was found to very strongly depend on the nature of its associated anion. Halides, such as iodide, bromide and chloride were particularly effective in suppressing the H2O2 decomposition activity. Oxidation pretreatment of the catalyst was found to strongly suppress its H2O2 decomposition activity, while a reduction treatment was found to promote its activity. A gradual decrease in the H2O2 decomposition activity of the catalyst was observed with each successive usage due to in situ sub-surface oxidation of Pd by H2O2. Halide incorporation either via the reaction medium or prior catalyst modification had a similar qualitative effect on the H2O2 decomposition activity. (c) 2006 Elsevier B.V. All rights reserved.</p>},
	keywords = {acid, H2O2 decomposition, H2O2 synthesis, halides, Pd catalysts, pretreatment},
	issn = {1381-1169},
	doi = {10.1016/j.molcata.2006.07.009},
	author = {Choudhary, Vasant R. and Samanta, C. and Choudhary, Tushar V.}
}
@article { ISI:000308345800010,
	title = {Solvent-free oxidation of aldehydes to acids by TBHP using environmental-friendly -exchanged Mg-Al hydrotalcite catalyst},
	journal = {Journal of Chemical Sciences},
	volume = {124},
	number = {4},
	year = {2012},
	month = {JUL},
	pages = {835-839},
	publisher = {INDIAN ACAD SCIENCES},
	address = {C V RAMAN AVENUE, SADASHIVANAGAR, P B \#8005, BANGALORE 560 080, INDIA},
	abstract = {<p>A number of hydrotalcite (Mg-Al, Mn-Al, Co-Al, Ni-Al, Mg-Fe, Mg-Cr and Cu-Al) catalysts, with or without MnO-exchange, were evaluated for their performance in the solvent-free oxidation of benzaldehyde to benzoic acid by tert-butyl hydroperoxide under reflux in the absence of any solvent. The MnO-exchanged Mg-Al-hydrotalcite (Mg/Al = 10) showed high activity in the oxidation of different aromatic and aliphatic aldehydes to their corresponding acids and also showed excellent reusability in the oxidation process which is environmental-friendly.</p>},
	keywords = {acid, Aldehyde, MnO4-1-exchanged Mg-Al-hydrotalcite catalyst, Oxidation, TBHP},
	issn = {0974-3626},
	doi = {10.1007/s12039-012-0268-7},
	author = {Choudhary, Vasant R. and Dumbre, Deepa K. and Narkhede, Vijay S.}
}
