Hierarchical carbon coated molybdenum dioxide nanotubes as a highly active and durable electrocatalytic support for methanol oxidation

2017 ◽  
Vol 5 (8) ◽  
pp. 4067-4074 ◽  
Author(s):  
Jing-Jia Zhang ◽  
Xu-Lei Sui ◽  
Guo-Sheng Huang ◽  
Da-Ming Gu ◽  
Zhen-Bo Wang
Keyword(s):  
Corrosion Resistance ◽  
Catalytic Activity ◽  
Surface Area ◽  
Methanol Oxidation ◽  
Molybdenum Dioxide ◽  
Good Corrosion Resistance ◽  
Highly Active ◽  
Carbon Coated ◽  
Good Catalytic Activity ◽  
Hierarchical Carbon

Hierarchical nanotubes of Pt/MoO2@C catalyst demonstrated good catalytic activity and ultrahigh stability towards methanol electrooxidation due to the large surface area and good corrosion resistance.

Catalytic activity of electrospun Ag and Ag/carbon composite fibres in partial methanol oxidation

2015 ◽  
Vol 5 (2) ◽  
pp. 1153-1162 ◽  
Author(s):  
V. Halperin ◽  
G. E. Shter ◽  
V. Gelman ◽  
D. M. Peselev ◽  
M. Mann-Lahav ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Methanol Oxidation ◽  
Partial Oxidation ◽  
Oxidation Process ◽  
Carbon Composite ◽  
Carbon Fibres ◽  
Methanol Partial Oxidation ◽  
Highly Active

A feasibility of electrospinning in producing of highly active Ag and Ag/carbon fibres based catalysts is demonstrated in methanol partial oxidation process (PMO).

Influence of preparation conditions on the catalytic activity of high surface area silica in partial methanol oxidation

2017 ◽  
Vol 330 ◽  
pp. 852-862 ◽  
Author(s):  
Tarek T. Ali ◽  
Sulaiman N. Basahel ◽  
Hatem A. Mahmoud ◽  
Kamal M.S. Khalil ◽  
Katabathini Narasimharao
Keyword(s):  
Catalytic Activity ◽  
Surface Area ◽  
Methanol Oxidation ◽  
High Surface ◽  
High Surface Area ◽  
Preparation Conditions

A novel metalloporphyrin-based conjugated microporous polymer for capture and conversion of CO2

RSC Advances ◽  
2015 ◽  
Vol 5 (40) ◽  
pp. 31664-31669 ◽  
Author(s):  
Xingfeng Sheng ◽  
Hongchen Guo ◽  
Yusheng Qin ◽  
Xianhong Wang ◽  
Fosong Wang
Keyword(s):  
Carbon Dioxide ◽  
Catalytic Activity ◽  
Specific Surface ◽  
Surface Area ◽  
Pore Volume ◽  
Cyclic Carbonate ◽  
Conjugated Microporous Polymer ◽  
Microporous Polymer ◽  
Bet Specific Surface Area ◽  
Good Catalytic Activity

A novel conjugated microporous polymer was solvothermally synthesized, which had high BET specific surface area and pore volume, and displayed excellent capacity to capture carbon dioxide and good catalytic activity for cyclic carbonate synthesis.

Characterization and Catalytic Reactivity of LaNi1-xMgxO3-δ Perovskite Oxides in Reforming of Methane with CO2 and O2

2017 ◽  
Vol 16 (4) ◽  
Author(s):  
Alireza Jahangiri ◽  
Majid Saidi ◽  
Abolfazl Mohammadi ◽  
Mehdi Sedighi
Keyword(s):  
Catalytic Activity ◽  
Surface Area ◽  
Sol Gel ◽  
Synthesis Method ◽  
Sample Surface ◽  
Nano Particles ◽  
Partial Substitution ◽  
Syngas Production ◽  
Highly Active ◽  
Oxide Phases

Abstract A series of Mg doped LaNiO3 nano particles by solids denoted as LaNi1-xMgxO3-δ (x = 0, 0.1, 0.2, 0.4, 0.6, 0.8 and 1) were prepared by the modified citrate sol-gel method and investigated as catalysts for combine reforming of methane (CRM).The resulting oxides were examined by using XRD, BET, ICP, SEM, EDS, TEM, TPR and TGA techniques, under the condition of as-synthesized and used samples. The results showed that highly homogeneous and crystalline oxides with particle sizes in the range of nanometers were obtained through this synthesis method. The XRD patterns of the prepared LaNi1-xMgxO3-δsolids confirmed with increasing Mg amount not only perovskite structure could not form correctly but also the spinel (La2NiO4) and oxide phases (MgO and NiO) are produced on the sample surface. Also according to BET results, the presence of these oxide phases lead to the increase in the surface area of samples .Although, increasing in surface area had not a significant effect in results of activity tests. TPR analysis revealed that the reduction of the prepared samples became more difficult by increasing the degree of substitution (x). The effects of the partial substitution of Ni by Mg and reaction temperatures (600–800 °C) were investigated in CRM process, after reduction of the samples under hydrogen. Although, all catalysts, except LaMgO3, were found to be highly active toward the syngas production during the CRM process but substitution of Ni by Mg could not improve the catalytic activity of the LaNi1-xMgxO3-δ in this process. The catalytic activity in the steady state was found to decrease in the following order: $${\text{LaNi}}{{\text{O}}_{\text{3}}} \gt {\text{LaN}}{{\text{i}}_{{\text{0}}{\text{.4}}}}{\text{M}}{{\text{g}}_{{\text{0}}{\text{.6}}}}{{\text{O}}_{{\text{3 - }}\delta }} \gt {\text{LaN}}{{\text{i}}_{{\text{0}}{\text{.6}}}}{\text{M}}{{\text{g}}_{{\text{0}}{\text{.4}}}}{{\text{O}}_{{\text{3 - }}\delta }} \gt {\text{LaN}}{{\text{i}}_{{\text{0}}{\text{.9}}}}{\text{M}}{{\text{g}}_{{\text{0}}{\text{.1}}}}{{\text{O}}_{{\text{3 - }}\delta }} \gt {\text{LaN}}{{\text{i}}_{{\text{0}}{\text{.8}}}}{\text{M}}{{\text{g}}_{{\text{0}}{\text{.2}}}}{{\text{O}}_{{\text{3 - }}\delta }} \gt {\text{LaMgO3 - }}\delta$$ Of course, according to the TPR and TGA results, the stability of the samples increased and the coke deposits on the catalyst surface decreased with increasing of x, respectively.

High resolution electron microscopy of lanthanum phosphate crystals

1978 ◽  
Vol 36 (1) ◽  
pp. 274-275
Author(s):  
J. C. Wheatley ◽  
J. M. Cowley
Keyword(s):  
Electron Microscopy ◽  
Catalytic Activity ◽  
High Resolution ◽  
Petroleum Industry ◽  
High Resolution Electron Microscopy ◽  
Lanthanum Phosphate ◽  
Good Catalyst ◽  
Resolution Electron ◽  
Good Catalytic Activity ◽  
Physical And Chemical

Rare-earth phosphates are of particular interest because of their catalytic properties associated with the hydrolysis of many aromatic chlorides in the petroleum industry. Lanthanum phosphates (LaPO4) which have been doped with small amounts of copper have shown increased catalytic activity (1). However the physical and chemical characteristics of the samples leading to good catalytic activity are not known.Many catalysts are amorphous and thus do not easily lend themselves to methods of investigation which would include electron microscopy. However, the LaPO4, crystals are quite suitable samples for high resolution techniques.The samples used were obtained from William L. Kehl of Gulf Research and Development Company. The electron microscopy was carried out on a JEOL JEM-100B which had been modified for high resolution microscopy (2). Standard high resolution techniques were employed. Three different sample types were observed: 669A-1-5-7 (poor catalyst), H-L-2 (good catalyst) and 27-011 (good catalyst).

BRUSH ALLOY 3

Alloy Digest ◽  
1983 ◽  
Vol 32 (3) ◽  
Keyword(s):  
Mechanical Properties ◽  
Thermal Conductivity ◽  
Corrosion Resistance ◽  
Physical Properties ◽  
Copper Alloy ◽  
Elevated Temperatures ◽  
Physical And Mechanical Properties ◽  
Heat Treating ◽  
Good Resistance ◽  
Good Corrosion Resistance

Abstract BRUSH Alloy 3 offers the highest electrical and thermal conductivity of any beryllium-copper alloy. It possesses an excellent combination of moderate strength, good corrosion resistance and good resistance to moderately elevated temperatures. Because of its unique physical and mechanical properties, Brush Alloy 3 finds widespread use in welding applications (RWMA Class 3), current-carrying springs, switch and instrument parts and similar components. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as casting, forming, heat treating, machining, joining, and surface treatment. Filing Code: Cu-454. Producer or source: Brush Wellman Inc..

SILNIC BRONZE

Alloy Digest ◽  
1960 ◽  
Vol 9 (7) ◽  
Keyword(s):  
Corrosion Resistance ◽  
High Temperature ◽  
Physical Properties ◽  
Tensile Properties ◽  
High Strength ◽  
Heat Treating ◽  
Silicon Alloy ◽  
Good Corrosion Resistance ◽  
Temperature Performance ◽  
Nickel Silicon

Abstract SILNIC BRONZE is a copper-nickel-silicon alloy having high strength, high conductivity and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on high temperature performance and corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-90. Producer or source: Chase Brass & Copper Company Inc..

MONEL ALLOY 401

Alloy Digest ◽  
1970 ◽  
Vol 19 (6) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Temperature Coefficient ◽  
Nickel Alloy ◽  
Electrical Resistance ◽  
Heat Treating ◽  
High Electrical Resistance ◽  
Good Corrosion Resistance ◽  
Copper Nickel Alloy

Abstract MONEL alloy 401 is a copper-nickel alloy with high electrical resistance and is used primarily in specialized electrical and electronic applications. It has a negligible temperature coefficient of electrical resistance and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, and tensile properties. It also includes information on forming, heat treating, and machining. Filing Code: Cu-216. Producer or source: Huntington Alloy Products Division.

ALCAN 350

Alloy Digest ◽  
1957 ◽  
Vol 6 (7) ◽  
Keyword(s):  
Mechanical Properties ◽  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
Heat Treating ◽  
Casting Alloy ◽  
Aluminum Casting ◽  
Aluminum Casting Alloy ◽  
Good Corrosion Resistance ◽  
Aluminum Company

Abstract ALCAN 350 is a 10% magnesium-aluminum casting alloy having high mechanical properties, excellent machinability, and good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear strength as well as fatigue. It also includes information on corrosion resistance as well as casting, heat treating, machining, and joining. Filing Code: Al-52. Producer or source: Aluminum Company of Canada Ltd.

YELLOW BRASS

Alloy Digest ◽  
1956 ◽  
Vol 5 (8) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Shear Strength ◽  
Physical Properties ◽  
Tensile Properties ◽  
Cold Working ◽  
Heat Treating ◽  
Zinc Alloy ◽  
Good Corrosion Resistance ◽  
Copper Zinc

Abstract YELLOW BRASS is a copper-zinc alloy having excellent cold working properties with good corrosion resistance. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and shear strength as well as fatigue. It also includes information on forming, heat treating, machining, and joining. Filing Code: Cu-41. Producer or source: Brass mills.

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