Dehydrogenation of methanol over copper-containing catalysts

Minyukova, T. P.; Simentsova, I. I.; Хасин, А. В.; Shtertser, N. V.; Baronskaya, N. A.; Khassin, A. A.; Yurieva, T. M.

doi:10.1016/s0926-860x(02)00328-9

Cited by 48 publications

(27 citation statements)

References 14 publications

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“…[13][14][15][16][17][18][19] To activate catalyst precursors, a weighed sample of the precursor (0.5 g) was placed in a fixed bed reactor and treated with hydrogen with a flow rate of 4-10 L h -1 at 653 K.…”

Section: Methodsmentioning

confidence: 99%

Hydrogenation of lactic acid on reduced copper-containing catalysts

et al. 2009

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The copper containing catalysts were prepared by reduction of various oxide precursor compounds. Their catalytic properties were studied in the hydrogenation of lactic acid to propylene glycol under atmospheric pressure. An efficient catalyst, whose precursor compound is copper hydroxosilicate with the structure close to the natural mineral chrysocolla, was developed. The optimum conditions for the synthesis of propylene glycol were established that make it possible to achieve a conversion of lactic acid of 97% at atmospheric hydrogen pressure and 473 K.

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Section: Methodsmentioning

confidence: 99%

Hydrogenation of lactic acid on reduced copper-containing catalysts

et al. 2009

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“…In addition, this reduces the cost of the electrocatalyst [9]. As examples: Ru [6,10], Mo [11], and Cu [12] have been used as catalysts together with Pt.…”

Section: Introductionmentioning

confidence: 99%

Graphite Electrodes Modified with Platinum‐Nickel Nano‐Particles for Methanol Oxidation

2007

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Methanol electro‐oxidation is investigated at graphite electrodes modified with various platinum and nickel nano‐particle deposits using cyclic voltammetry. The modified electrodes are prepared by the simultaneous electrodeposition of metals from their salt solutions using potentiostatic and galvanostatic techniques. They show enhanced catalytic activity towards methanol oxidation in KOH solution. The catalytic activity of platinum nano‐particles is found to be significantly affected by the presence of relatively small amounts of nickel deposits. A comparison is made between the electrocatalytic activity of Pt/C and (Pt‐Ni)/C electrodes. The results show that the methanol electro‐oxidation current increases with an increase in the nickel content. In particular, the highest catalytic activity is achieved for platinum to nickel deposits of 95%:5% (wt.‐%), in other cases the catalytic activity decreases. It is found that Ni enhances the catalytic activity of Pt by increasing the number of active sites, as well as through an electron donation process from Ni to Pt. This process takes place once the nickel hydroxide (Ni(OH)2)/nickel oxy‐hydroxide (NiOOH) transformation begins. The effect of the methanol concentration on the methanol oxidation reaction is investigated. The order of reaction, with respect to methanol, at the modified (Pt‐Ni)/C electrode is found to be 0.5.

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“…The copper-based catalysts, such as Cu-Si [2][3][4][5][6], Cu-Ti and Cu-Zr [3,7], Cu-La, Cu-Y and Cu-Ce [7], Cu-Cr [6,8], Cu-Al [9], Cu-Cement [10], Cu-Zn-Si [6], Cu-ZnCr [11], Cu-Zn-Al [12], Cu-Zr-Zn and Cu-Zr-Zn-Al [13], Cu-Cr-Na [14], Cu-La-Mn and Cu-La-Ti [15], Cu-Zn-Al-Na [16], Cu-Si-Mg-Ba-Cr-Zn [17], behave very high activity and selectivity for the dehydrogenation of methanol to methyl formate. The uniqueness of copper may be associated with its ability for sequential hydrogen removal from methanol and other oxygencontaining fragments stopping just before carbon monoxide formation [15].…”

Section: Introductionmentioning

confidence: 99%

Vapor phase dehydrogenation of methanol to methyl formate in the catalytic membrane reactor with Cu/SiO2/ ceramic composite membrane

Guo

et al. 2005

Catal Lett

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The Cu/SiO 2 /ceramic composite membrane was prepared on the SiO 2 /ceramic mesoporous membrane by an ion exchange method, and vapor phase dehydrogenation of methanol to methyl formate in the catalytic membrane reactor was investigated. It showed much better performance in the catalytic membrane reactor than that in the fixed-bed reactor under the same reaction conditions. At 240 C, 57.3% conversion of methanol and 50.0% yield of methyl formate were achieved in the catalytic membrane reactor and only 43.1% conversion of methanol and 36.9% yield of methyl formate were achieved in the fixed-bed reactor.

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Dehydrogenation of methanol over copper-containing catalysts

Cited by 48 publications

References 14 publications

Hydrogenation of lactic acid on reduced copper-containing catalysts

Hydrogenation of lactic acid on reduced copper-containing catalysts

Graphite Electrodes Modified with Platinum‐Nickel Nano‐Particles for Methanol Oxidation

Vapor phase dehydrogenation of methanol to methyl formate in the catalytic membrane reactor with Cu/SiO2/ ceramic composite membrane

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