Synonym: accelerator. Similar words: analyst, catalog, analyse, analyses, analysis, paralysis, at all, fatal. Meaning: ['kætəlɪst] n. 1. (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected 2. something that causes an important event to happen.
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121) The ammonia synthesis catalyst exhibited higher intensity and catalytic activity low temperature, and good thermal resistance.
122) The higher the hydrogen transfer activity of catalyst, the lower the FCC naphtha, and in the meanwhile, the coke yield increased and diesel yield decreased.
123) But cobalt and manganese bromide catalyst solution is more convenient for industrial application and its manufacturing cost is lower than others.
124) The individual chemical property of the element made it a good catalyst.
125) Flowing status of catalyst bed are guaranteed by adopting reaming air scattering plate and raw material sparger method decided according to the calculation of the pressure drop of reactor bed.
126) The asymmetric transformation of L-proline via formation of salt with (S)-tartaric acid was carried out by using butanal as a catalyst for epimerization in butanoic acid.
127) Under microwave irradiation, cyclohexanone 1,2-propylene ketal was synthesized from cyclohexanone and 1,2-propanediol using HPW as catalyst.
128) Terpineol was conveniently prepared by a new type solid acid catalyst without pollution.
129) The invention also envisages a method for the preparation of a coloured polymer, the method comprising performing a polymerisation reaction in the presence of such a catalyst.
130) Disclosed is a curable composition which exhibits excellent curability while using a catalyst other than organic tin catalysts.
131) The invention discloses an octanol hydrorefining catalyst, which belongs to the field of hydrorefining catalytic materials.
132) Resablue experiments of the catalyst showed that heteropoly acid was promising catalyst n - buty lactate synthesis.
133) Dihexyl sebacate was synthesized from sebacic acid and n-hexanol alcohol with Sodium bisulfate as catalyst.
134) The catalyst could be used for many times without any treatment and no pollution to environment. Comparing with the normal catalysts,(http://sentencedict.com/catalyst.html) the nanosolid superacid catalyst had obvious advantages.
135) Complexation with metal elements, it can also be used as sensitizer of fluorescence materials and catalyst of organic oxidation reaction. As a result of that, it attracts more and more attention now.
136) The effect of acid and alcohol mole ratio, the amount of vitamin C catalyst and reaction time on the yield of Nipagin esters was investigated.
137) The wolf market may be here to stay, at least until the economic recovery accelerates or another catalyst prompts the market to find footing.
138) Finishing bath by the above - mentioned synthetic resin, catalyst and softening agents.
139) The fluorination yield reached 81.2% when calixarene was chosen as phase transfer catalyst.
140) In the circulation process, a part of the heat wind heated by the heater flows into the vent-pipe and passes through the catalyst unit.
141) In this paper, 2,2-dimethylolbutyraldehyde was synthesized through the acetal reaction of formaldehyde and butyraldehyde, using silicotungstic acid as catalyst.
142) It had been found that ammonium ferric sulfate dodecahyrate was superior to sulfuric acid when used as catalyst for esterification of isoamyl alcohol and hexanoic acid.
143) During the CO2 gasification reaction process, due to less sulfur content gas generated, the iron element in the catalyst would have certain catalyst effect to CO2 gasification of the semi-coke.
144) The Mass transfer rate for the Oxidation of xylol in air by a monolithic Catalyst was experimentally determined.
145) The invention involves a load palladium amorphous alloy catalyst used for nitrophenol hydrogenation and preparation method and belongs to catalyst technology field.
146) With potassium fluoride as catalyst, spironolactone compound was synthesized from DDSA.
147) FH - 40 C light fraction hydrofining catalyst is developed by Fushun Research Institute of Petroleum and Petrochemicals ( FRIPP ).
148) A new method to synthesize sodium dioleyl sulfosuccinate by esterification and sulfonation without adding any extra phase catalyst in nitrogen atmosphere was developed.
149) It is found that if the hydrocracking catalyst and the hydrorefining catalyst are used in ratio of 1:1, both high coal conversion and oil yield can be obtained, and the hydrogen consumption is low.
150) The catalyst auto - continuous addition was realized by using the CENTUM sequence control function.
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