查询词典 catalytic

Experiments on purification technologies for the conversion of cornstalk biomass into the industrial product were made to produce cornstalk gas in the down-flow fixed by the gasifier. The experiment focused on the technical procedures for deoxygenation. catalytic cracking of tar, hydrogenation, etc. Quality straw syngas was produced for methanol synthesis. The catalysis of methanol synthesis for the production of cornstalk syngas was earned out in a tubular-flow integral and isothermal reactor under the pressure of 5MPa over Cu-based catalyst C301 (particle size: 0.833mm×0.351mm), a catalyst made in China. Thirty-three sets of test data were obtained.

为了实现秸秆类生物质合成燃料甲醇的工业转化，有效利用生物质能，对下吸式固定床气化炉产生的低热值玉米秸秆燃气进行除氧、分解焦油和配氢等纯化试验，制备出合成甲醇的优质秸秆合成气，在直流流动等温积分反应器中，使用国产C301铜基催化剂，催化剂粒度为20~40目(0.833mm×0.351mm)，在5MPa反应压力下，对玉米秸秆合成气进行催化合成甲醇试验研究，获得33套试验数据。

The cis novel bisoxazoline ligands L1-L4 have been synthesized through the treatment of new cis dihydroxy diamide with p-toluenesulfonyl chloride in the presence of catalytic quantity of 4--pyridine, and the cis dihydroxy diamide could be achieved from the condensation of the amino alcohols and cis cyclopropane dicarbonyl chloride prepared via oxidation and halogenation from cis-2,2-dimethyl-3-formylcyclopropanecarboxylate with DCC.

我们以蒈醛酸内酯为起始原料，经过氧化反应、酰氯化反应得到顺式环丙烷二酰氯，然后在二环己基碳二亚胺的催化下与相应的氨基醇反应合成了顺式二羟基酰胺，再用对甲苯磺酰氯将羟基活化，最后在二甲氨基吡啶的催化下关环合成顺式双噁唑啉配体L1～L4。

At present, studies on and applications of chiral diamine s have been regarded as one of the most remarkable fields in catalytic asymmetric reactions.

手性二胺作为具有良好催化活性和对映选择性的手性配体或手性辅助剂，在多种催化不对称反应中已经得到广泛应用，并取到了很好的研究成果。

The polymer carriers,the immobilization of rare earth compounds,the properties of polymer-supported rare earth metal complex es and their catalytic characteristics in the polymerization of diene was reviewed with 25 references.

对聚合物载体的合成、稀土金属化合物的固定和聚合物载体－稀土金属络合物的性质及其催化双烯烃聚合的特征进行了论述。

The matrix composites for diamond tools were tested with such modern testing instruments and equipments as DTA-7 differential thermal analyzer, JCXA-733 electronic probe and scanning electron microscope, JEM 2000 FX Ⅱ transmission electron microscope, eXL energy spectrometer, and humidity test instrument. The analysis, comparison, and induction of the testing results prove the enhancing effects of the rare earth on the matrix composites: degeneration, micro-alloying, purification, and catalytic activation. The comprehensive function of these effects leads to the decrease in the porosity of the matrix composites and to the increase in such actual indexes as the flexural strength, hardness, and impact ductility of the whole rare earth Fe-based diamond tool materials.

由DTA-7型差热分析仪、JCXA-733型电子探针及扫描电镜、JEM2000FXⅡ型透射电镜、eXL能谱仪以及莱茨2AP高温显微镜材料润湿性测试仪等现代测试仪器设备对金刚石工具材料进行了测试实验，对测试实验的结果进行了分析、比较和归纳，证实了稀土对胎体材料具有变性、微合金化、纯化和催化活化等四大强化作用机理，这些机理的综合作用导致了胎体材料孔隙率的降低和整个稀土Fe基金刚石工具材料抗弯强度、硬度及冲击韧性等实际使用性能的上升。

First the traditional non-optical detection technology for gas concentrations is briefly introduced, such as ultra-sound technology, gas sensing, catalytic thermal, gas chromatography, interferometry applications, and then the spectral analysis based on the concentration of gas detection is discussed. The latest technological developments on the differential absorption spectroscopy, Fourier transform infrared spectroscopy, tunable laser diode laser absorption spectroscopy, laser radar and differential absorption Raman scattering laser radar, laser-induced fluorescence spectroscopy, laser Photoacoustic Spectroscopy are reviewed in detail.

首先对传统的非光学气体浓度检测技术作出了简单的介绍，包括超声波技术、气敏法、热催化法、气相色谱法、干涉法应用技术，被动检气管法，然后重点阐述了基于光谱学分析气体浓度检测技术的最新发展动态，其中分别对差分吸收光谱技术、傅里叶变换红外光谱技术、可调谐激光二极管激光吸收光谱技术、差分吸收激光雷达和拉曼散射激光雷达、激光诱导荧光光谱技术、激光光声光谱技术进行了详细介绍，最后提出了现代气体浓度检测技术的发展方向。

In addtion, the β-diketone compound of Ti is complexed with late transition metal Co, Ni complex to furtherly modify the catalytic ability of the catalyst system.

利用配位配体来调节催化剂的催化性能是烯烃聚合催化剂设计和合成的基本思路和重要途径之一，是开发新型功能性聚烯烃材料的重要方法。

The latest researches in dimethyl ether as a clean fuel and its catalytic combustion were reviewed.

介绍了近年来二甲醚作为一种清洁能源的研究状况，进行了二甲醚的催化燃烧研究的初探。

After the complete consumption of stored hydrogen, direct catalytic decomposition of NO occurred.

在973 K时，NO在CNTs上几乎能100％分解，连续反应150 min后其反应活性不降低，且未观察到CO或CO2的生成。

The results showed that magnesia base catalyst-sorbent was available to denitrification of flue gas by direct catalytic decomposition method the best calcinations time and temperature was 3-4 h and 350-500 ℃,and the denitrification rate was 85%- 95%.

结果表明，利用氧化镁基催化吸附剂可以对烟气进行直接催化分解脱硝，其最佳的焙烧温度和时间分别为350～500℃和3～4h，脱硝率可达85％～95％。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。