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reactor evaluation
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  “reactor evaluation”译为未确定词的双语例句
     A fixed-fluidized bed reactor evaluation showed that the prepared promotor had high activity and stability, which cracking product slate was equivalent to that of the platinum combustion promotor. A three-month commercial test carried on a 300kt/a FCCU also exhibited good combustion promoting activity.
     具有较高的活性和稳定性。 固定流化床实验表明 ,该助燃剂有良好助燃活性 ,裂化产品分布与铂助燃剂相当 ,在 30 0kt/a催化裂化装置上三个多月的工业应用试验表明 ,该助燃剂有良好的助燃活性和应用前景
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     The catalytic reactivity for Ni 2(OCH 3) 2/SiO 2 was characterized by temperature programmed surface reaction mass spectroscopy(TPSR MS) and micro reactor evaluation techniques. The results revealed that CO 2 and CH 3OH could react on Ni 2(OCH 3) 2/SiO 2 with good reactivity and high DMC selectivity.
     CO2 在催化剂表面存在甲氧碳酸酯基物种和桥式两种吸附态 ,CH3 OH则只有一种分子吸附态 ;
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     On Evaluation
     评价论
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     On Evaluation
     浅议评估的定义
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     FEASIBILITY EVALUATION OF DOMESTICATION OF POLYSTYRENE REACTOR
     聚苯乙烯反应器国产化可行性分析
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     Analysis and Evaluation for the Reactor Vessels of CEFR
     CEFR 堆容器应力分析与评价
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     The Installation of NSA-Reactor
     氢氧反应器的吊装和就位
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  reactor evaluation
Students working on the project at Argonne National Laboratory were also able to nearly complete a new Zero Power Reactor evaluation.
      


A CO combustion promotor consisted of non noble metal oxide was prepared. The preparation procedure was mixing the prepared active component, La 1-x Sr xMn 1-y Co yO 3, powder having a particle diameter of 30 70nm and a surface area of 20 25m 2/g with Al 2O 3 and kaolin, succeeded by spraying. A fixed-fluidized bed reactor evaluation showed that the prepared promotor had high activity and stability, which cracking product slate was equivalent to that of the platinum combustion promotor....

A CO combustion promotor consisted of non noble metal oxide was prepared. The preparation procedure was mixing the prepared active component, La 1-x Sr xMn 1-y Co yO 3, powder having a particle diameter of 30 70nm and a surface area of 20 25m 2/g with Al 2O 3 and kaolin, succeeded by spraying. A fixed-fluidized bed reactor evaluation showed that the prepared promotor had high activity and stability, which cracking product slate was equivalent to that of the platinum combustion promotor. A three-month commercial test carried on a 300kt/a FCCU also exhibited good combustion promoting activity.

开发了一种非贵金属CO助燃剂。首先制备超细钙钛矿金属氧化物粉末 ,粉末粒径 30~ 70nm ,比表面积 2 0~ 2 5m2 /g。再将制备好的La1-xSrxMn1-yCoyO3 活性组分 ,与Al2 O3 高岭土混合 ,经喷雾造粒获得CO助燃剂。具有较高的活性和稳定性。固定流化床实验表明 ,该助燃剂有良好助燃活性 ,裂化产品分布与铂助燃剂相当 ,在 30 0kt/a催化裂化装置上三个多月的工业应用试验表明 ,该助燃剂有良好的助燃活性和应用前景

Using carbon dioxide and methanol as the raw materials to synthesize dimethyl carbonate (DMC) is an important reaction in the field of synthetic chemistry for carbon resources utilization and environmental protection. In this paper, the supported binuclear bridged Sn 2(OMe) 4/SiO 2 complex for the direct synthesis of DMC from carbon dioxide and methanol was prepared by SiO 2 surface modification method and the chemical composition, the surface structure, the thermal stability, the adsorption properties and...

Using carbon dioxide and methanol as the raw materials to synthesize dimethyl carbonate (DMC) is an important reaction in the field of synthetic chemistry for carbon resources utilization and environmental protection. In this paper, the supported binuclear bridged Sn 2(OMe) 4/SiO 2 complex for the direct synthesis of DMC from carbon dioxide and methanol was prepared by SiO 2 surface modification method and the chemical composition, the surface structure, the thermal stability, the adsorption properties and the catalytic activity of Sn 2(OMe) 4 /SiO 2 were thoroughly investigated by titration method, infrared spectroscopy, thermal decomposition spectroscopy, temperature programmed desorption, and micro reactor evaluation techniques. The results showed that bis μ OMe bridged structure, Sn 2(OMe) 2, can be formed between the two Sn 4+ metal ions and be bonded on the surface of SiO 2 by Sn O Si bonds to form Sn 2(OMe) 4/SiO 2; CO 2 can be chemisorbed on Sn 2(OMe) 4 /SiO 2 catalyst to form bridged adsorption state and methoxy carbonate species, the bridged adsorption state can be transformed into methoxy carbonate species at higher temperature; CH 3OH can be chemisorbed on the catalyst to form molecular adsorption state; CO 2 and CH 3OH can react on Sn 2(OMe) 4/SiO 2 catalyst with good reactivity and DMC selectivity, the reaction products were mainly DMC and H 2O with few CO, CH 4 and CH 2O, under a proper reaction condition (temperature 413 K, pressure 0 5 MPa, SV 1?500 h -1 and CH 3OH/CO 2 molar ratio 2~2 5), the Sn 2(OMe) 4/SiO 2 catalyst had almost 100% DMC selectivity; the mechanism for DMC direct synthesis from CO 2 and CH 3OH on the surface of Sn 2(OMe) 4/SiO 2 was proposed based on the experimental results, the reaction of CO 2 and CH 3OH co adsorbed on the same active center on the surface of Sn 2(OMe) 4 /SiO 2 and the formation of methoxy carbonate species of CO 2 on the surface of the catalyst were the critical steps for the DMC synthesis.

采用表面改性法制备了负载型Sn2 (OMe) 4 /SiO2 双核桥联配合物催化剂 ,用IR ,TPD和微反技术对催化剂的表面结构、化学吸附性质和催化活性进行了研究 .结果表明 ,双核桥联Sn2 (OMe) 4 /SiO2 配合物中存在Sn O Si双齿配位形式 ,甲氧基以桥基形式联结两个Sn4+ 离子 ;CO2 在催化剂表面以桥式吸附态和甲氧碳酸酯基吸附态存在 ,而CH3 OH只以分子吸附态存在 .在反应温度 4 13K ,压力 0 5MPa ,反应空速 15 0 0h-1以及CH3 OH与CO2 的摩尔比为 2~ 2 5的反应条件下 ,CO2 和CH3 OH在Sn2 (OMe) 4 /SiO2 催化剂上生成碳酸二甲酯的选择性达到近 10 0 % .根据实验结果 ,提出了CO2 与CH3 OH在Sn2 (OMe) 4 /SiO2 催化剂表面上的反应机理 ,反应物分子共吸附于催化剂表面同一活性位上及CO2 的甲氧碳酸酯基吸附态的形成是反应顺利进行的关键因素 .

The supported dinuclear bridged Ni 2(OEt) 2/SiO 2 catalyst for direct synthesis of methacrylic acid from CO 2 and C 3H 6 was prepared by surface modification and ion-exchange method. The surface structure, thermal stability, chemisorption and catalytic performance of the catalyst were investigated by titration method, infrared spectroscopy, differential scanning calorimetry and micro-reactor evaluation techniques. The Ni 2+ bonded with surface O 2- of SiO 2 support in bidentate fashion and...

The supported dinuclear bridged Ni 2(OEt) 2/SiO 2 catalyst for direct synthesis of methacrylic acid from CO 2 and C 3H 6 was prepared by surface modification and ion-exchange method. The surface structure, thermal stability, chemisorption and catalytic performance of the catalyst were investigated by titration method, infrared spectroscopy, differential scanning calorimetry and micro-reactor evaluation techniques. The Ni 2+ bonded with surface O 2- of SiO 2 support in bidentate fashion and the bis-μ-OC 2H 5 bridged structure Ni 2(OEt) 2 formed between the two metal ions. The bridged bis-μ-OC 2H 5 was decomposed at 534 K and 566 K. CO 2 can be chemisorbed on the catalyst in two kinds of states, bridged adsorption state and monoethyl carbonate species. The bridged adsorption state can be transformed into monoethyl carbonate species at higher temperature. C 3H 6 can be chemisorbed on the catalyst only in one kind of state, molecular adsorption state. The influence of reaction temperature, reaction pressure and gas space velocity on the synthesis of methacrylic acid from CO 2 and C 3H 6 was investigated. The Ni 2(OEt) 2/SiO 2 catalyst has higher C 3H 6 conversion and 100% of selectivity for methacrylic acid under appropriate reaction conditions: n(CO 2)/ n(C 3H 6)=2, SV= 1*!500 h -1, p=0.5 MPa, T=443 K. The reaction mechanism for synthesis of methacrylic acid from CO 2 and C 3H 6 on the Ni 2(OEt) 2/SiO 2 catalyst was proposed based on the experimental results. The reactivity is determined by CO 2 and C 3H 6 co-adsorded on the same active center of the catalyst as well as COOH and C 3H 6 in dissociated adsorption state.

采用表面改性法制备了负载型Ni2 (OEt) 2 /SiO2 双核金属乙氧基配合物催化剂 ,利用示差量热、红外光谱和微反技术对催化剂的表面结构、热稳定性、化学吸附性质和催化活性进行了研究 .结果表明 ,负载型双核金属乙氧基配合物Ni2 (OEt) 2 /SiO2 中的Ni2 + 与载体SiO2 表面的O2 -以双齿配位形式键合 ;二氧化碳在催化剂表面存在桥式吸附态和碳酸单乙酯基物种两种吸附态 ,丙烯则只有一种分子吸附态 ;在适宜的反应条件下 ,二氧化碳和丙烯在Ni2 (OEt) 2 /SiO2 催化剂上的反应产物主要是甲基丙烯酸 .根据实验结果 ,提出了二氧化碳和丙烯在Ni2 (OEt) 2 /SiO2 催化剂表面的反应机理 ,反应物分子共吸附于催化剂表面同一活性单元上 ,羧酸根和丙烯解离吸附态的形成是反应顺利进行的关键步骤 .

 
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