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The optimum conditions are: molar ratio of glycol to cyclohexanone is 1.6:1, the quantity of catalyst is equal to 0.25% of feed stocks, and the reaction time is 40 mm. H3PW12O40/MCM-48 is an excellent catalyst for synthesizing cyclohexanone ethylene ketal and its yield can reach over 80.63%.

实验表明：H3PW12O40/MCM-48是合成环己酮乙二醇缩酮的良好催化剂，在n：n＝1：1.6，催化剂用量为反应物料总质量的0.25%，环己烷为带水剂，反应时间40min的优化条件下，环己酮乙二醇缩酮的收率可达80.63%。

The ketalization of cyclohexanone and 1,4-butanediol catalyzed by the Hβ zeolite was studied.Effects of reaction time,mole ratio of reactants and amount of catalyst on the yield of ketal were studied.Results showed that the Hβ zeolite was an efficient catalyst for the synthesis of ketal.

研究了Hβ分子筛催化1，4-丁二醇与环己酮的缩合生成新型七元环缩酮的反应，考察了反应时间、酮与醇的配比、催化剂用量、催化剂重复使用等因素对醛与醇缩合反应的影响。

The quantity of catalyst was equal to 0.6% of feedstocks,the reaction temperature was 78～110 ℃,and the reaction time was 45 min. The test results have shown thatH_4SiW_(12-O_(40)/MCM-48 is an excellent catalyst for synthesizing butanone 1,2-propanediol ketal with its yield reaching over 91.9%.

实验表明：H4SiW12O40/MCM-48是合成丁酮-1，2-丙二醇缩酮的良好催化剂，在n∶n(1，2-丙二醇)=1∶1.6，催化剂用量为反应物料总质量的0.6%，环己烷为带水剂，反应时间45 min的优化条件下，丁酮-1，2-丙二醇缩酮的收率可达91.9%。

Presented a new method for producing hydrogen using formic acid as the new material,which has not been reported,investigated the feasibility of adopting nickel as the active component of the catalyst for formic acid reaction for hydrogen production,analyzed the effect of using magnesia and lanthana as co-catalyst on the resistance to carbon formation.

以甲酸为原料制取氢气，考察了镍作为甲酸制氢催化剂活性组分的可行性以及镁和镧作为助催化剂的抗析碳作用。

VPO catalyst precursor is prepared by adding sodium laurate,oleic acid,stearic acid and Tween 60 to study the effect of biosurface- active materials on the structure and properties of VPO catalyst precursor.

为了探讨生物表面活性物质对VPO催化剂前驱体结构和性能的影响，制备了月桂酸钠、油酸、硬脂酸和吐温60四种物质存在下的VPO 催化剂前驱体。

The results show that the optimal parameters of esterification are as follows: 4% of SO42-/ZrO2, molar ratio of methanol to litsea cubeba kernel oil 101, 68 ℃ of reaction temperature and 4 h of reaction time, the acid value decreases to 2.52 mg/g. Compared with the traditional acidic-catalyzed method, this method has the advantages of no acid proof equipment, easy to recycle catalyst and no acidic waste water emission. The optimal parameters of transesterification are as follows: 25 ℃ of reaction temperature, 0.5% of hexadecyl-trimethyl-ammonium bromide, 1% of NaOH, molar ratio of methanol to the oil 61 and 15 min of reaction time. The ester exchanging rate is 97.6%. This method adopts phase transfer catalyst and produces industry prospect, which has many advantages such as energy-saving and time-saving under room temperature.

研究结果表明，固体酸SO42-/ZrO2催化酯化反应的最佳条件为：油重4%的SO42-/ZrO2，醇油摩尔比为101，温度为68 ℃，反应时间为4 h，原油酸值降到2.52 mg/g；该法相对浓硫酸催化酯化法具有不需耐酸设备、催化剂易回收、无废水排放等优点；相转移催化酯交换反应的最佳条件为：温度为 25 ℃，0.5%的十六烷基三甲基溴化铵，油重1%的NaOH，醇油摩尔比为61，反应15 min，原油酯交换率达到97.6%；采用相转移催化技术，反应在常温下进行，大大减少了能耗，缩短了反应时间，具有的产业化前景。

The HPW/M-SiO2 catalyst is characterized by means of infrared-ray spectrum, X-ray diffraction and n-C4H9NH2 Potentiometric titration. The effects of amount of the catalyst, molar ratio of acid and alcohol, reaction temperature and reaction time on synthesis of methyl mandelate have been investigated.

运用IR， XRD和n-C4H9NH2电位滴定法测试技术表征HPW/M-SiO2催化剂，考察了催化剂用量、物料配比、反应温度和反应时间等对扁桃酸甲酯合成的影响。

The results illustrate the facts that:(1) The best catalyst among them is manganous sulfate,(2) compound catalyst consisting of a mixture of metal sulfates in proper proportion is better than any one of them used alone.

本文研究的第二种脱硫新工艺是采用MnSO〓等催化剂使SO〓经过液相催化成SO〓进而形成稀硫酸，实验发现MnSO〓相对于ZnSO〓和〓有较好的催化作用，三者按一定比例组成的复合催化剂的催化能力优于单组分的催化能力。

The product was immiscible with catalyst/water and could be separated simply by filtration after the reaction. This method is manipulatively simple, environment-friendly and the catalyst is reusable.

反应生成的取代氢化氧杂蒽与离子液体的水溶液不相溶，通过简单的过滤可实现产物与催化体系的分离，简化了分离过程，方法操作简便、环境友好、催化剂可回收并重复使用。

Using magnesium methoxide as a heterogeneous catalyst to produce biodiesel was put forward,and the corresponding process for catalyst disposal was researched.

开发了以甲醇镁为非均相催化剂制备生物柴油的工艺流程，研究了相应的催化剂后处理工艺。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。