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151, The title curing agent has been prepared by one - step catalytic polymerization process with a specific chemical additive.

152, The catalytic activity of tungsten carbide was studied through hydrogenation of benzene.

153, The importance of implementing fast aging method for catalytic converter is firstly described in this paper, then the fast aging test equipment and test procedure we adopted are introduced.

154, This article reviews the study on the synthesis of tert - butanol from isobutylene in residual C4 by catalytic hydration with concentrated heteropoly acid (HPA).

155, Hexamethylphosphoric triamide(HPT) was added as toughened modifier in anionic catalytic polymerization of caprolactam to prepare modified MC nylon.

156, Hydrogen transfer is one of the characteristics of catalytic cracking reaction.

157, HSBR ) was prepared by hydrogenating styrene - butadiene rubber ( SBR ) latex with hydrazine hydrate - hydrogen peroxide - copper sulfate catalytic system.

158, The application of catalytic distillation reactor in benzene alkylation process is presented.

159, The micro-structure of Y zeolites is closely related to its stability and catalytic properties.

160, We have prepared several complex catalyst of stannous chloride and rare earth chloride to replace mercuric chloride and examined their catalytic activity for the synthesis of vinyl chloride.

161, The preparation and catalytic properties of different bromine - free catalysts were discussed.

162, The results obtained show that pillared rare earth catalyst has higher catalytic activities and narrow molecular weight distribution, and does not corrode metal, which makes it environmental friendly.

163, In the reaction of NAE 18 with nitrogen mustard aryl phosphorochloridate, 4 - dimethylaminopyridine ( DMAP ) played critical catalytic action.

164, By analyzing for the flange leakage on a heavy oil catalytic pyrolysis unit, the writer put forward a treatment method, i. e. to replace old asbestos gasket with a compound corrugated gasket.

165, Fluidized bed processing was first used commercially in fluid catalytic cracking of crude oil in 1941.

166, The invention discloses a catalytic purification method of chlorobenzene waste gas.

167, The results showed that the macrostructure, the composition of the crystal phase and the catalytic activity of the catalyst are related to the calcining temperature.

168, Another important aspect of enzymes activity addition to catalytic power is the specificity of enzymes reactions.

169, Compared the catalytic activity of ferric chloride hexahydrate, stannic chloride pentahydrate and sodium bisulfate monohydrate for synthesis of nerolin bromelia.

169, Sentencedict.com try its best to collect and make good sentences.

170, The dual-group hydrocarbon type rubber plasticizer was prepared using the heavy components in the production of heavy oil catalytic cracking by secondary deasphalting process.

171, Usually a pipe, known as a dip leg, is connected to this bottom outlet and, in catalytic cracking, serves to convey the solids back to the catalyst bed.

172, Binding of dioxygen and catalytic activity are the promising properties.

173, After acid catalytic dehydration the condensate subsequent hydrolysis was proceeded in the existence of protective agent, the yield of hydroxycitronellal came up to 87.7%.

174, The catalytic oxidation ability of 13 metal ion-exchanged montmorillonites are investigated in oxidative removal of the sulfides which are the main pollutant in the moult and alkali swell waste water.

175, Glyoxylic acid was rapidly synthesized by catalytic oxidation of glyoxal with H 2 O 2.

176, Nickel coating is deposited through redox reaction in the presence of catalytic centers.

177, The main treatment methods of spent electroless nickel plating solution include chemical deposition, catalytic reduction, electrolysis, ionic exchange, etc.

178, The component is the catalytic converter, which has a mandatory part of exhaust systems since 1975.

179, The effects of HZSM 5 zeolite ion exchanged by transition metals on catalytic pyrolysis reaction and the yields of ethylene and propylene using light gas oil feedstock were studied.

180, The mass fraction of n - butene in mixed C 4 from catalytic cracking after etherized was approximately 40 %.