scholarly journals Carbon oxidation activity of complex oxides (Part 2)^|^mdash;Characteristics of La0.9Ag0.1FeO^|^alpha; synthesized at low temperature using co-precipitation method^|^mdash;

2013 ◽  
Vol 121 (1409) ◽  
pp. 95-99 ◽  
Author(s):  
Susumu NAKAYAMA ◽  
Ryushiro TOKUNAGA ◽  
Masaki SHIOMI ◽  
Takahiro NAKA
Keyword(s):  
Low Temperature ◽  
Complex Oxides ◽  
Precipitation Method ◽  
Carbon Oxidation ◽  
Oxidation Activity ◽  
Co Precipitation

Non-Thermal Plasma Assisted Catalytic Oxidation NO over Mn-Ni-Ox Catalysts at Low-Temperature

2011 ◽  
Vol 383-390 ◽  
pp. 3092-3098 ◽  
Author(s):  
Kai Li ◽  
Xiao Long Tang ◽  
Hong Hong Yi ◽  
Ping Ning ◽  
Zhi Qing Ye ◽  
...  
Keyword(s):  
Low Temperature ◽  
Catalytic Oxidation ◽  
Thermal Plasma ◽  
Space Velocity ◽  
Input Voltage ◽  
No Oxidation ◽  
Precipitation Method ◽  
Non Thermal Plasma ◽  
High Space ◽  
Co Precipitation

Mn-Ni-Ox catalyst was prepared by the co-precipitation method. The most active catalysts were obtained with a molar Ni/ (Mn+Ni) ratio of 0.1. The results showed that over this catalyst, NO oxidation conversion reached 59% at 125°C and 50% at 150°C with a high space velocity of 35000h-1. Their surface properties were evaluated by means of scanning electron microscopy (SEM). The process of non-thermal plasma-assisted catalytic oxidation of NO under low-temperature was studied. And the NO conversion could reach 80% with the non-thermal plasma-assisting at 150°C when the input voltage was 30V. The increasing activities at low temperature（50~175°C）were more apparently higher than high temperature by plasma. And the low-temperature catalytic activity of the catalyst was increased with the increase of the input voltage.

The Preparation and Characterization of LiFe0.98Mn0.02PO4/C by Spray-Drying and Low Temperature Reduction Route

2012 ◽  
Vol 581-582 ◽  
pp. 525-528
Author(s):  
Jia Feng Zhang ◽  
Bao Zhang ◽  
Xue Yi Guo ◽  
He Zhang Chen ◽  
Jian Long Wang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Spray Drying ◽  
Xrd Analysis ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
Sem Images ◽  
Temperature Reduction ◽  
Co Precipitation ◽  
Low Temperature Reduction

The LiFe0.98Mn0.02PO4/C was synthesized by spray-drying and low temperature reduction route using FePO4•2H2O as precursor, which was prepared by a simple co-precipitation method. The LiFe0.98Mn0.02PO4/C sample was characterized by X-ray diffraction (XRD), scanning electron microscope (SEM) and electrochemical measurements. The XRD analysis and SEM images show that sample has the good ordered structure and spherical particle. The charge-discharge tests demonstrate that the powder has the better electrochemical properties, with an initial discharge capacity of 162.1 mAh•g−1 and 155.8 mAh•g−1 at current density of 0.1 C and 1C, respectively. The capacity retention reaches 99.4% after 100 cycles at 1C.

Facile preparation of mesoporous Cu–Sn solid solutions as active catalysts for CO oxidation

RSC Advances ◽  
2015 ◽  
Vol 5 (33) ◽  
pp. 25755-25764 ◽  
Author(s):  
Yarong Li ◽  
Honggen Peng ◽  
Xianglan Xu ◽  
Yue Peng ◽  
Xiang Wang
Keyword(s):  
Solid Solution ◽  
Co Oxidation ◽  
Water Vapour ◽  
Solid Solutions ◽  
Precipitation Method ◽  
Oxidation Activity ◽  
Facile Preparation ◽  
Co Precipitation

A mesoporous Cu0.5Sn0.5Oy solid solution catalyst with Caramel-Treats-like morphology prepared easily by co-precipitation method exhibits remarkably improved CO oxidation activity and potent resistance to water vapour deactivation.

Low-Temperature Sintering and Electromagnetic Properties Evaluation of (Ni/Mn)CuZn Ferrite

2007 ◽  
Vol 534-536 ◽  
pp. 557-560
Author(s):  
Dong Ying Ju ◽  
Pei Bian
Keyword(s):  
Low Temperature ◽  
Boric Acid ◽  
High Strength ◽  
Electromagnetic Properties ◽  
Sintered Body ◽  
Precipitation Method ◽  
Ferrite Powder ◽  
Low Temperature Sintering ◽  
Co Precipitation ◽  
Co2 Atmosphere

Low temperature sintering (Ni/Mn)CuZn ferrite was employed at most cases due to its co-firability with Ag (below 960 °C).The purpose of this study is to fabricate (Ni/Mn)CuZn ferrite sintered body with high-strength and high-frequency magnetic properties. Following is the procedure: firstly, (Ni/Mn)CuZn ferrite powder was synthesized under CO2 atmosphere at 500 °C from the mixed doxalate synthesized by co-precipitation method; then a small amount of boric acid [H3BO3] was added to the powder, and the (Ni/Mn)CuZn ferrite powder compact was prepared with Newton press and CIP methods; finally, (Ni/Mn)CuZn ferrite sintered body was fabricated by sintering at 900 °C under CO2 atmosphere. By this method, NiCuZn and MnCuZn ferrite sintered bodies with 0.5 mass% boric acid were obtained, the strength are 430 and 530 MPa respectively. The effect of various Mn addition on NiCuZn electromagnetic properties were studied.

Fabrication of High Transparent YAG Ceramics by Vacuum Sintering at Low Temperature

2008 ◽  
Vol 368-372 ◽  
pp. 420-422 ◽  
Author(s):  
Zhi Hui Chen ◽  
Jiang Tao Li ◽  
Jiu Jun Xu
Keyword(s):  
Low Temperature ◽  
Yttrium Aluminum Garnet ◽  
Precipitation Method ◽  
Green Body ◽  
Vacuum Sintering ◽  
Visible Wavelength ◽  
Sintering Additive ◽  
Yttrium Aluminum ◽  
Co Precipitation

Yttrium aluminum garnet (YAG) nanopowders were synthesized by n-amyl co-precipitation method. Transparent YAG ceramics were achieved by sintering the green body at 1800°C and then 1600°C for ten hours with TEOS as sintering additive. The transmittance of the sample was 75% at visible wavelength of 800nm.

The Effects of SiO2 and CeO2 Addition on the Performances of MnOx/TiO2 Catalysts

2016 ◽  
Vol 69 (10) ◽  
pp. 1180
Author(s):  
Juhua Luo ◽  
Hongkai Mao ◽  
Xu Wang ◽  
Wei Yao
Keyword(s):  
Low Temperature ◽  
Pore Diameter ◽  
Catalytic Reduction ◽  
Pure Tio2 ◽  
Precipitation Method ◽  
Impregnation Method ◽  
Average Pore ◽  
Reduction Of No ◽  
No Conversion ◽  
Co Precipitation

A TiO2-SiO2 mixed oxide was obtained by a co-precipitation method. MnOx-CeO2/TiO2-SiO2 were prepared by an impregnation method and their activity towards the selective catalytic reduction of NO with NH3 at low temperature were evaluated. Compared with pure TiO2, TiO2-SiO2 exhibited an evidently larger surface area and pore volume, and a smaller average pore diameter with narrow distribution. The NO conversion of the MnOx/TiO2-SiO2 catalyst could be improved by the addition of an appropriate amount of CeO2 in the temperature range of 100–180°C. MnOx-CeO2/TiO2-SiO2 with 10 wt-% CeO2 showed the highest activity with 96 % NO conversion at 180°C.

Iron Doped Lanthanum Stannate Pyrochlores (La2Sn2-XFeXO7) for the Simultaneous Catalytic Removal NOx and Soot

2011 ◽  
Vol 306-307 ◽  
pp. 1468-1472 ◽  
Author(s):  
Zhong Peng Wang ◽  
Zi Zi Wang ◽  
Xiao Wang ◽  
Qian Li ◽  
Zong Gang Mu ◽  
...  
Keyword(s):  
Soot Oxidation ◽  
Redox Properties ◽  
Precipitation Method ◽  
Oxidation Activity ◽  
Structure Defects ◽  
Constant Ph ◽  
High Maximum ◽  
Co Precipitation ◽  
Catalytic Removal ◽  
Soot Oxidation Activity

A series of La2Sn2-xFexO7 (x=0, 0.2, 0.6, 1.0, 1.4, 1.8, 2.0) catalysts were prepared by a constant pH co-precipitation method, and their catalytic activity was investigated for simultaneous removal of NOx and soot. The incorporation of Fe strongly influences the crystal phase composition, surface area and redox properties of the catalysts. All the catalysts displayed soot oxidation activity with nearly 100% selectivity towards CO2. The doped solids exhibit higher activities than the undoped one, which may be related to the enhancement of reducibility derived from structure defects induced by doping. LSF0.6 may be a good catalyst with high soot oxidation activity (Ti = 334 °C) and a high maximum productivity of N2 (PN2= 12.4%).

Effect of Cerium on Manganese Base Catalysts by Co-Precipitation for Low-Temperature SCR of NO with NH3

2014 ◽  
Vol 633 ◽  
pp. 121-124 ◽  
Author(s):  
Liang Jing Zhang ◽  
Su Ping Cui ◽  
Hong Xia Guo ◽  
Xiao Yu Ma ◽  
Xiao Gen Luo
Keyword(s):  
Catalytic Activity ◽  
Low Temperature ◽  
Selective Catalytic Reduction ◽  
Catalytic Reduction ◽  
Precipitation Method ◽  
Base Catalysts ◽  
Nox Conversion ◽  
Scr Of No ◽  
Co Precipitation ◽  
Low Temperature Scr

Catalysts of Mn/TiO2 and Mn-Ce /TiO2 prepared by co-precipitation method for low temperature selective catalytic reduction (SCR) of NO with NH3 were investigated in this study. The experimental results showed that co-precipitation method after improvement, the NO conversion of Mn-Ce/TiO2 catalyst increased sharply. Meanwhile, the addition of cerium has significant effects on the catalytic activity. Characterizations of catalysts were carried out by XRD, BET and H2-TPR. The characterized results indicated that co-precipitation method after improvement, in temperature windows 150 to 300 °C, showed higher NOx conversion.

Industrialization of tailoring spherical cathode material towards high-capacity, cycling-stable and superior low temperature performance for lithium-ion batteries

RSC Advances ◽  
2016 ◽  
Vol 6 (100) ◽  
pp. 97818-97824 ◽  
Author(s):  
Zhonghui Sun ◽  
Liansheng Jiao ◽  
Yingying Fan ◽  
Fenghua Li ◽  
Dandan Wang ◽  
...  
Keyword(s):  
High Temperature ◽  
Low Temperature ◽  
Cathode Material ◽  
Lithium Ion Batteries ◽  
High Capacity ◽  
Lithium Ion ◽  
Precipitation Method ◽  
Temperature Performance ◽  
Different Types ◽  
Co Precipitation

Three different types of spherical cathodes (Li[Ni0.6Co0.2Mn0.2]O2) were synthesized via hydroxide co-precipitation method coupled with high temperature lithiation process.

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