查询词典 catalyst

The photocatalytic behavior of such prepared nano-Cu2O was evaluated by the decomposition of acidic fuchsine solution under daylight. The influence of glucose addition and the initial concentration of acidic fuchsine solution as well as the catalyst reusability were examined.

用它做催化剂在日光作用下对酸性品红溶液进行了光催化降解实验，研究了葡萄糖添加浓度、酸性品红溶液的初始浓度和催化剂的重复使用对光催化性能的影响。

A 99.1% photocatalyzed degradation was achieved with 6mg/L initial concentration of acidic fuchsine solution in 2.5h added with 7g/L of glucose. This photocatalytic degradation remained with 75% after the catalyst repetitively used for 6 times.

结果表明分散剂葡萄糖浓度为7g/L时制得的纳米Cu2O光催化活性最佳，当酸性品红溶液的初始浓度为6 mg/L时，2.5 h降解率高达99.1%，重复使用6次后其降解率仍可达到75%。

The dimethyl fumarate is synthesized by one-step from maleic anhydrid and methanol in the presence of mixed catalyst.

马来酸酐与甲醇在混合催化剂的作用下，一步合成了富马酸二甲酯。

Is the theory as a guide, the selection of a heterogeneous catalytic function of inorganic salt, the efficient preparation of compound catalyst, can make the original conversion rate of increase heterogeneous 4 to 5 percentage points, reducing the pollution of the environment and can significantly reduce Fumarate production costs and have a good economic and environmental benefits.

是以相关理论为指导，遴选有异构催化功能的无机盐，制备复合型的高效催化剂，可以使原有的异构转化率提高4～5个百分点，减少对环境的污染，且能显著降低富马酸的生产成本，有很好的经济效益和环保效益。

Diethyl fumarate was synthesized with fumaric and alcohol as raw materials and sodium acid sulfate as catalyst.

富马酸二乙酯(又名反丁烯二酸二乙酯，Diethylfumarate，简称DEF)是一种用途广泛的有机合成中间体[1，2]。

The work described in this thesis provides valuable information both for controlling the microstructure and tailoring the surface reactivity of CNF. It is evident that the reproducible and well-performed catalyst can be obtained based on a well fundamental understanding of the surface structure and surface reactivity of CNF.

通过本文的研究表明纳米碳纤维作为一种新型碳材料在催化领域的应用潜力，显示出纳米碳纤维微结构的控制和表面化学性质的调变都将对催化性能产生的影响，建立纳米碳纤维的催化性能与催化剂结构及其调变手段的关系是至关重要的。

It was found that because of the difference in component distribution and structure, the tendency that pores furcate and bend was smaller in amorphous precursor than in crystalline precursor, and for the amorphous precursor, the velocity of Al leaching-out and the expanding of specific surface area of catalyst were more sensitive to activation process parameters.

结果发现，由于两者在组元的分布及结构上的差异，非晶态前置体合金在活化过程中形成的微孔发生弯折、分叉的倾向要小于晶态前置体合金，同时前者在活化过程中的抽Al速率、以及所得到的催化剂的比表面积等对活化工艺更为敏感。

Resinification of furfural on the catalyst was the main cause of deactivation .

糠醛树脂化结焦是导致催化剂失活的主要原因。

The fuberidazole was prepared by reaction of O-phenylendiamine with furfural at the presence of CTMAB as catalyst.

以邻苯二胺和糠醛为原料，以十六甲基三烷基溴化铵为催化剂合成了麦穗宁。

With furfuraldehyde and acetone as raw materials,furfural acetone was synthesized in the presence of Ando's catalyst.

以丙酮和糠醛为原料，在Ando催化剂存在下合成了糠叉丙酮。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。