Effect of chemical composition and preparation conditions on the properties of nickel catalysts III. Nickel-silica gel catalysts

1969 ◽  
Vol 5 (10) ◽  
pp. 327-333 ◽  
Author(s):  
V. A. Dzis'ko ◽  
S. P. Noskova ◽  
L. G. Karachiev ◽  
M. S. Borisova ◽  
V. G. Bolgova ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Silica Gel ◽  
Nickel Catalysts ◽  
Preparation Conditions

Effect of preparation conditions on the properties of carbon-supported nickel catalysts

1991 ◽  
Vol 43 (1) ◽  
pp. 93-98 ◽  
Author(s):  
M. Domingo-García ◽  
L. Vicente-Gutiérrez ◽  
C. Moreno-Castilla
Keyword(s):  
Nickel Catalysts ◽  
Preparation Conditions ◽  
Supported Nickel Catalysts

Hydrogenation of Nitrobenzene to Aniline over Silica Gel Supported Nickel Catalysts

2010 ◽  
Vol 49 (10) ◽  
pp. 4664-4669 ◽  
Author(s):  
Junhua Wang ◽  
Zhenle Yuan ◽  
Renfeng Nie ◽  
Zhaoyin Hou ◽  
Xiaoming Zheng
Keyword(s):  
Silica Gel ◽  
Nickel Catalysts ◽  
Supported Nickel Catalysts

Preparation and Properties of YAG Powder and Porous Ceramics

2014 ◽  
Vol 1058 ◽  
pp. 217-220
Author(s):  
Wen Bo Zhao ◽  
Xin Liang ◽  
Fa Mei Hu ◽  
Liang Liang You ◽  
Bo Feng Ma ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Reaction Time ◽  
Chemical Composition ◽  
Yttrium Aluminum Garnet ◽  
Sintering Temperature ◽  
Porous Ceramics ◽  
Diffraction Peak ◽  
Preparation Conditions ◽  
Yttrium Aluminum ◽  
Properties Of Materials

Yttrium aluminum garnet (YAG) with a chemical composition of Y3Al5O12 is an important advanced structural and functional material.The preparation conditions were a pH of 9, a titration rate of 10ml/minute and a reaction time of 60 minutes. The analysis shows that the YAG precursor does not have an obvious characteristic crystalline diffraction peak, the characteristic diffraction peak of YAG was found after the calcination of the YAG precursor at 1100¡æ for 1 hour, the characteristic diffraction peak of YAG is strong, which indicates that the YAG crystalline phase is integrated and pure. The pore microstructure of porous YAG ceramics marked differed with an increase in the sintering temperature, the compressure strength of porous YAG ceramics is increased with an increase in the sintering temperature, the compressure strength shows the opposite rule with the prosity, which indicaties the mechanical properties of materials are effacted with the densification effect of materials.

TPR studies of the effects of preparation conditions on supported nickel catalysts

1990 ◽  
Vol 62 (2) ◽  
pp. 179-198 ◽  
Author(s):  
B. Mile ◽  
D. Stirling ◽  
M.A. Zammitt ◽  
A. Lovell ◽  
M. Webb
Keyword(s):  
Nickel Catalysts ◽  
Preparation Conditions ◽  
Supported Nickel Catalysts

scholarly journals INVESTIGATION OF THE CHEMICAL COMPOSITION AND EFFICIENCY OF SEED OIL OF SPINDLE TREE (EUONYMUS EUROPAEA L.) ON THE MODEL OF NON-ALLERGIC DERMATITIS

2018 ◽  
Vol 3 ◽  
pp. 45-54
Author(s):  
Olha Vrubel ◽  
Igor Nektegaev ◽  
Volodymyr Antonyuk
Keyword(s):  
Fatty Acids ◽  
Gas Chromatography ◽  
Chemical Composition ◽  
Contact Dermatitis ◽  
Allergic Contact Dermatitis ◽  
Silica Gel ◽  
Seed Oil ◽  
Anti Inflammatory ◽  
Allergic Contact

The aim of the research was to study the chemical composition and effectiveness of the seed oil of Spindle tree (Euonymus europaea L.) on the non-allergic contact dermatitis model. The oil was obtained by the extraction by petroleum ether from the seeds. The analysis of fatty acids and determination of their quantitative content was carried out using gas chromatography. Determination of carotenoids and tocopherols content in fatty oils was carried out after chromatography on a silica gel column. Investigation of anti-inflammatory action of the Spindle tree seed oil on white rats was carried. Determination of biochemical parameters of blood plasma was performed on the semi-automatic biochemical analyzer BS3000M (Poland). The yield of oil was 20–28 % of the weight of the seeds. Nine fatty acids were identified in the oil by the gas chromatography, among which 4 are unsaturated (oleic, palmitoleic, linoleic and linolenic), which together make up 87.79 % of all fatty acids from this oil. Spindle tree oil contains 26±5 mg – % carotenoids and 40±5 mg – % tocopherols, which were separated by chromatography on a silica gel column. There were no symptoms of intoxication with the introduction of Spindle tree oil in the stomach of rats and it can be classified in the 4 the grade of danger in accordance with GOST 12.1.005-88. The anti-inflammatory activity of Spindle tree oil in comparison with the oil of Sea buckthorn on the model of non-allergic contact dermatitis was weaker, but sufficient to recommend it for the treatment of skin diseases in ointments.

Optimizing Chemical Composition and Preparation Conditions for Fe-Substituted Li[sub 2]MnO[sub 3] Positive Electrode Material

2007 ◽  
Vol 154 (7) ◽  
pp. A638 ◽  
Author(s):  
Mitsuharu Tabuchi ◽  
Yoko Nabeshima ◽  
Masahiro Shikano ◽  
Kazuaki Ado ◽  
Hiroyuki Kageyama ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Electrode Material ◽  
Positive Electrode ◽  
Preparation Conditions ◽  
Positive Electrode Material

Reductive Amination of Diethylene Glycol to Morpholine over Supported Nickel Catalysts: Zeolites as Catalyst Admixtures

1992 ◽  
Vol 57 (4) ◽  
pp. 901-908 ◽  
Author(s):  
Květa Jirátová ◽  
Hana Šnajdaufová ◽  
Lenka Morávková ◽  
Ludmila Kubelková
Keyword(s):  
Chemical Composition ◽  
Surface Properties ◽  
Amorphous Silica ◽  
Diethylene Glycol ◽  
Reductive Amination ◽  
Catalytic Properties ◽  
Nickel Catalysts ◽  
Phase Changes ◽  
Zeolite Surface ◽  
Supported Nickel Catalysts

The effect of HZSM-5, H-silicalite and amorphous silica admixtures on the surface properties of nickel catalysts as well as on their activities, selectivities and stabilities in the reductive amination of diethylene glycol was studied. It was found that, in comparison with amorphous silica, zeolites do not positively affect the catalytic properties of nickel catalysts. In addition, the acidity of the zeolites, the dispersity of the nickel phase, changes in the chemical composition during the reaction and adsorption of the reaction components or intermediates on the surface and consequent blocking of the zeolite surface played a role.

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