Total oxidation of ethanol and propane over Mn-Cu mixed oxide catalysts

Morales, María Roxana; Barbero, Bibiana P.; Cadús, Luís E.

doi:10.1016/j.apcatb.2006.05.006

Cited by 243 publications

(131 citation statements)

References 19 publications

Supporting

Mentioning

120

Contrasting

Order By: Relevance

“…However, Ag-Mn, Ag-Co and Ag-Ce composite oxides supported on Al 2 O 3 have been reported as catalysts for oxidation of volatile organic compounds [12]. In a previous study, Mn-Cu mixed oxides have been reported to & Abdelrahman A. Badawy aabadawy107@yahoo.com be catalytically more active towards ethanol oxidation as compared to individual Mn 2 O 3 and CuO [6]. Both copper and manganese mixed oxides catalysts were found to be more active catalysts in many industrial oxidation processes, such as CO oxidation by O 2 , combustion of toluene, methanol, ethylene, ammonia, NO 2 and other combustion reactions [13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The influence of La2O3-doping on structural, surface and catalytic properties of nano-sized cobalt–manganese mixed oxides

Badawy

Ibrahim

2016

Int J Ind Chem

View full text Add to dashboard Cite

Structural, textural and catalytic activity of CoO-Mn 2 O 3 system as being influenced by La 2 O 3 -doping (0.75-3 mol%) and calcination temperatures (300-500°C) were investigated. The techniques employed were XRD, N 2 -adsorption-desoprtion at -196°C, EDX and catalysis of H 2 O 2 -decomposition in aqueous solution at 30-50°C. The results revealed that the investigated system consisted of nano-sized Co 2 MnO 4 as a major phase together with unreacted portion of Co 3 O 4 and c-Mn 3 O 4 . Doping with the smallest amount of La 2 O 3 greatly increased the surface molar ratio of Mn/Co (88 %) for the solid calcined at 500°C with subsequent increase of the catalytic activity more than 12-fold for solids calcined at 500°C. The increase of La 2 O 3 -dopant above 0.75 mol% decreased progressively the surface molar ratio of Mn/Co with subsequent decrease in the catalytic activity which still measured higher values than that measured for the un-doped catalyst.

show abstract

Section: Introductionmentioning

confidence: 99%

“…Mixing manganese with transition metal oxides in many catalytic systems modify the catalytic activity of individual components [5,6]. Mixed oxide materials are active for oxidation-reduction reactions and combustion processes.…”

Section: Introductionmentioning

confidence: 99%

The influence of La2O3-doping on structural, surface and catalytic properties of nano-sized cobalt–manganese mixed oxides

Badawy

Ibrahim

2016

Int J Ind Chem

View full text Add to dashboard Cite

show abstract

“…as Mn-Cu-O [20], Co-Ce-O [21] and Co-Mn-O [9] have showed promising performance in the catalytic oxidation of HCHO.…”

Section: Introductionmentioning

confidence: 99%

Effect of Mn substitution on the promoted formaldehyde oxidation over spinel ferrite: Catalyst characterization, performance and reaction mechanism

Liu

Wei

et al. 2016

Applied Catalysis B: Environmental

162

View full text Add to dashboard Cite

“…In recent studies, MnO 2 and Mn 3 O 4 were found to be active and stable catalysts for the combustion of organic compounds [1,12]. Mixing manganese with transition-metal oxides *Address correspondence to this author at the Physical Chemistry Department, National Research Center, Dokki, Egypt; Fax: +202 3700931; E-mail: elshobaky@yahoo.com oxides in many catalytic reactions might modify the catalytic activity of separate components [13,14]. In a previous study, Mn-Cu mixed oxides were catalytically active towards ethanol oxidation than pure Mn 2 O 3 and pure CuO [14].…”

Section: Introductionmentioning

confidence: 99%

Surface and Catalytic Properties of Nanocrystalline Pure and Li2O - Doped CoO/Mn2O3 System

El-Shobaky¹,

Shouman²,

Ibrahim³

2009

TOCATJ

View full text Add to dashboard Cite

Abstract:The effects of calcination temperature (350 -700°C) and Li 2 O -doping (0.75 -4.5 mol%) on solid -solid interaction, surface and catalytic properties of CoO/Mn 2 O 3 were investigated using XRD, N 2 adsorption at -196ºC and isopropanol conversion carried out at 180 -280°C using a flow method. The results obtained revealed that solid -solid interaction between pure and doped -solids took place at temperatures starting from 350°C to yield cobalt manganese oxide (Co, Mn) (Co,Mn) 2 O 4 phase. The degree of crystallinity and crystallite size of the produced phase increased progressively as a function of calcination temperature but still remained as nanocrystalline phase 15 -33 nm. Li 2 O -doping of the system investigated decreased the crystallite size of the produced phase. The doping process decreased the specific surface area of the system investigated, the decrease attained 33% and 32% in presence of 4.5 mol% Li 2 O in solids calcined at 500 and 700ºC, respectively. Li 2 O -doping exerted an effective increase in total pore volume, the increase reached 57% and 27% by doping with 4.5 mol% Li 2 O followed by calcination at 500 and 700, respectively. Pure system showed a broad pore volume distribution while the doped solids exhibited multimodal pore volume distribution curves. Pure and variously doped solids acted as dehydrogenation catalysts yielding only acetone. The activity increased by increasing the calcinations temperature from 350°C to 400°C, then decreased upon increasing the calcinations temperature above this limit. The doping process carried out at 500°C and 700°C much increased the catalytic activity. The maximum increase in the catalytic activity, measured at 280°C, in presence of 4.5 mol% Li 2 O attained 45 and 94% for the solids calcined at 500°C and 700°C, respectively. The increase in calcination temperature within 350°C and 700°C and doping with different amounts of Li 2 O did not change the mechanism of the catalyzed reaction.

show abstract

Total oxidation of ethanol and propane over Mn-Cu mixed oxide catalysts

Cited by 243 publications

References 19 publications

The influence of La2O3-doping on structural, surface and catalytic properties of nano-sized cobalt–manganese mixed oxides

The influence of La2O3-doping on structural, surface and catalytic properties of nano-sized cobalt–manganese mixed oxides

Effect of Mn substitution on the promoted formaldehyde oxidation over spinel ferrite: Catalyst characterization, performance and reaction mechanism

Surface and Catalytic Properties of Nanocrystalline Pure and Li2O - Doped CoO/Mn2O3 System

Contact Info

Product

Resources

About