负催化剂

The results showed that the optimal conditions were as follows: H3PW12O40/Al2O3 exhibited high activity and selectivity at the optimal temperature 330℃ and the load content of heteropoly acid 40%, the glycerol conversion reached 100% with acrolein selectivity of 83.7%.

结果表明，由甘油制备丙烯醛的较优条件为：当催化剂为H3PW12O40/Al2O3，负载量为40%，反应温度为330℃时，丙烯醛的选择性可达83.7％，甘油的转化率为100％。

The effects of calcination temperature and loading on the surface area of catalysts were examined.

考察了该催化剂在不同焙烧温度和不同的负载量下对其活性的影响，同时对反应的影响也进行了探讨。

A new recovery technology of solid waste was made which is from furfuryl alcohol production by furfural hydrogenization. When the solid waste is placed in a vacuum drying box, and is under lower negative pressure and at 130℃, the organic materials in solid waste can be distilled and then returned to the refining workshop to produce qualified furfuraldehyde and furfuryl alcohol. The remainder is mixed with soda ash and roasted in a reverberating furnace. The sodium chromate can be obtained by leaching. Rough cupric oxide is dissolved in nitric acid and cupric nitrate is obtained. A new catalyst was prepared by the above sodium chromate and cupric nitrate and used in furfuryl alcohol production.

将糠醛液相加氢生产糠醇产生的废渣置于真空干燥箱中，在较低的负压状态下保持130℃的温度，蒸馏回收废渣中的有机物，返回糠醇精制车间获得合格的糠醇与糠醛产品；剩余的固体废弃物与纯碱混合，在反射炉中焙烧，浸取获得铬酸钠水溶液；最后剩下的粗氧化铜溶于硝酸得到硝酸铜溶液；将铬酸钠溶液、硝酸铜溶液按一定比例混合，加入氨水搅拌，分离出的沉淀经传统方法焙烧活化、造粒制得新催化剂，回用于糠醛液相加氢生产糠醇。

TEM showed that nickel phosphide particles on MCM-41, prepared under optimal conditions, are about 5 nm in size.

最合适的负载量为30wt％，最佳条件下制备的催化剂颗粒大小约为5 nm。

Experimental result makes clear, activator of alumina load potassium carbonate has very good catalysis active.

考察了K2CO3负载量、催化剂用量、反应时间、反应物摩尔配比对反应结果的影响。

Phosphotungstic acid catalysts supported on ceria with various PW loadings were prepared by the impregnation method , and characterized by X- ray diffraction, acid strength and nitrogen adsorption techniques.

以CeO2为载体，用浸渍法制备了不同负载量的磷钨酸催化剂，并且考察了催化剂光催化脱色甲基橙溶液的催化性能。

A Mn TPP-Au/SiO2 composite catalyst was obtained by immobilizing Manganese porphyrin on Au/SiO2 (5% Au loading) using mercaptopyridine with sulfhydryl and pyridyl groups as bridging agent, and it was used for the aerobic oxidation of cyclohexane for the first time.

以包含巯基和吡啶基官能团的巯基吡啶为桥联剂，实现了MnTPP在金负载量为5%的Au/SiO2催化剂上的固载化，从而得到了一种新型MnTPP-Au/SiO2复合催化剂。

The effect of ion exchange of Y-MCM-41 on the hydrogenation activity of Pd-Pt/Y-MCM-41 in tetralin hydrogenation reaction was examined wit...

结果表明，采用不同离子交换处理的载体所制备的催化剂，其金属的负载量、金属与载体间的相互作用存在差别，从而影响催化剂的加氢活性和选择性。

The activity of 40%〓is the highest in theCesium salts.

负载量为40％的〓催化剂是活性最高的催化剂。

The different adsorbed species such as sulfates sulfites and adsorbed sulfur dioxides under various temperature, pressure and evacuated treatment conditions were characterized by in situ-IR. In the absent of oxygen, two bands were observed at 1050cm〓 and 1330cm〓, the former is the weakly chemisorbed sulfur dioxide species and the latter is the strongly chemisorbed SO〓.

首次利用正电子淹没技术求取了CeO〓在MgAl〓O〓上单层分布的阈值为0.075g／gMgAl〓O〓，此值略小于利用XRD法求取的单层分布阈值0.08g／gMgAl〓O〓，并且发现催化剂的氧化吸硫活性，O-Ps的生成率与CeO〓的负载量之间良好的对应关系，当CeO〓在MgAl〓O〓上形成单层分布时，O-Ps的生成率最小，此时，催化剂的活性最优。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。