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Catalytic dehydration of ethanol to ethylene was studied in this thesis.

本文对乙醇催化脱水制乙烯反应进行了研究。

For example, catalytic converters are now required for all cars in most European countries, to cut exhaust fumes.

例如，催化转换器，现在在大多数欧洲国家要求所有的汽车使用它以减少废气。

Catalytic Combustion of exhaust gas of crylic acid was studied on a self-made equipment.

在自制的设备上进行了丙烯酸废气的催化焚烧试验。

It is located in the exhaust gas stream between engine and the three-way catalytic converter.

它位于机器和三向催化转换器中间的废气流中。

The failure analysis on the leaked bellows expansion joint in catalytic cracking unit was investigated.

对某石化公司催化裂化装置中泄漏的大型波纹管膨胀节进行了失效分析。

The Pd-Cu/C catalysts were shown to have the face centered cubic crystal structure. This could indicate that the addition of Cu shortened the Pd-Pd distances in the crystal lattice, and therefore –HO(subscript 2ads) and O-O could be better adsorbed on the surface of the catalyst. When NaBH4 was used as the reducing agent, and the atomic ratio of Pd to Cu was 3:1, the resulting catalysts had an average particle size of 3. 4nm and showed the best catalytic performance. The electrochemical active surface are a of Pd3Cu/C was 38.9m^2/gPd and the oxidation reduction reaction activity of the Pd3Cu/C catalyst was much higher than that of the Pd/C catalyst. The electrochemical activity of the Pd3Cu/C catalyst was comparable to that of a commercial Pt/C catalyst.

结果表明：催化剂中Pd与Cu的物质的量之比与预设值相近，Pd和Cu基本被全部还原；Pd-Cu/C催化剂为面心立方结构，元素铜的加入使催化剂的Pd-Pd间距缩小，从而HO(下标 2 ads)和OO键能更好地吸附在催化剂金属表面；当采用NaBH4为还原剂，Pd与Cu物质的量比为3：1时，催化剂(Pd3Cu/C)的平均粒径为3.4 nm，催化剂的催化性能最好，电化学活性表面积EAS达到38.9平方公尺/gPd，电化学性能较Pd/C催化剂有很大提高，接近Pt/C商用催化剂。

The results of factorial experiment showed that the significant external factors affecting acid-catalytic ethanol pulping of wheat straw were ethanol concentration,pulping temperature,acid dosage and temperature holding time.

因子实验研究结果表明，显著影响麦草酸催化乙醇法制浆的外界因子是乙醇体积分数、蒸煮温度、催化剂用量和保温时间。

The catalytic mechanism of amidopyrine on the oxidation of ferrocyanide in KOH has been first presented.

提出了氨基比林对亚铁氰化钾的催化反应的机理。

The catalytic action of mercury on the colour reaction between potassium ferrocyanide and 4, 7-diphenyl-1, 10-phenanthrolihe has been studied, The addition of thiourea will further increase the sensitivity of the reaction.

本文研究了汞催化亚铁氰化钾与4，7-二苯基-1，10-菲啰啉显色反应体系，硫脲的加入显著提高了体系的灵敏度，摩尔吸光系数ε＝4。

A two-phase fluidized bed photo-catalytic reactor was designed and TiO2-coated photo-catalyst was prepared using firebrick granules as media in this study.

设计了一种二相流化床光催化氧化反应器，并以耐火砖颗粒为载体，用浸涂法制备了负载型TiO2光催化剂。

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％。