氢氧化铝

Hydrocarbon structural-group components in the hydrotreating of residual oils The residual oils were preseparated into 4 fractions by alumina/silica serial column A method for measuring the hydrocarbon structural-group components in saturated fraction, aromatic fraction, and resin fraction of residual oils was established using low resolution, high ionization voltage mass spectroscopy.

渣油加氢处理过程烃类结构族组成变化研究采用氧化铝/硅胶串联柱对渣油样品进行四组分预分离，建立了低分辨、高离子化电压质谱测定渣油饱和烃、芳烃和胶质组分烃类结构族组成的方法。

The higher selectivity to isopentenes, however, was regarded as a consequence of both insufficient active sites for further hydrogenation of isopentenes to isopentane and lower electronic interaction between Pd and the alumina surface.

而较高的选择性则可归因於没有足够的钯活性中心可供异戊烯进一步氢化生成异戊烷以及钯金属和氧化铝间较低的电子效应所致。

It has been found that compressive and flexural strength increases with increment of the density of lightweight alumina bubble ceramics surface-modified by aluminum dihydrogen orthophosphate and orthophorphoric acid due to in-situ formation of aluminum orthophosphate, and the results of the two surface-modifier were similar.

在原位反应生成磷酸铝烧结轻质氧化铝空心球陶瓷中，磷酸二氢铝、磷酸两种结合剂结合陶瓷的耐压强度和抗折强度随配方密度提高而提高，且较为相近。

The catalytic activity and selectivity for hydrodesulfurization and hydrodenitrogenation were studied by using benzothiophene, dibenzothiophene and quinoline as model compounds.

在N2-H2下，利用程序升温还原氮化反应制备氧化铝负载的β-Mo2N0.78催化剂，并以苯并噻吩、二苯并噻吩和喹啉为模型化合物，考察该催化剂的加氢脱硫、加氢脱氮活性和选择性。

This invention provides a method for preparing hydrogenation catalyst containing phosphorus supported by aluminum oxide. The catalyst is composed of nickel oxide 1-10 wt.%, molybdena oxide and tungsten oxide 10-50 wt.

以氧化铝为载体的含磷加氢催化剂及其制备，该催化剂焙烧后的组成为氧化镍1-10重量％，氧化钼和氧化钨之和大于10至50重量％，氧化磷1-9重量％，余量为氧化铝，其中，以氧化物计，钨和钼的摩尔比大于2.6至30。

The alumina carrier has concentrated pore distribution and is especially suitable for use as the carrier for hydrogenating demetalization catalyst.

该氧化铝具有更为集中的孔分布，特别适合用作加氢脱金属催化剂的载体。

In order to study the aldol condensation of 2.15-hexadecanedione on the surface of aluminium, the intermolecular condensation mechanism of acetone occurring on aluminum was simulated by using semi-empirical AM1 method embodied in MOPAC 6.0 program package. The optimized structures and geometry parameters of 5 transition complexes and 4 intermediates were given.First, 2 molecules of acetone coordinated with aluminum by electrostatic attraction.One atom of hydrogen of acetone migrated to aluminum because of t...

为了研究2，15－十六烷二酮在氧化铝表面的环合机理，选择小分子丙酮为模型化合物，用量子化学半经验AM1方法研究双分子丙酮在氧化铝表面的醛醇缩合机理，给出了反应过程中的5个过渡态和4个中间体的结构和几何参数，该催化反应可以认为是氧化铝分子与两分子丙酮分子发生静电络合作用，然后借助氧原子的负电荷导致脱氢并实现缩合，根据中间体的能量变化，推测有较稳定的铝复合物生成。

Titanium oxide; aluminium oxide; selective hydrogenation; dienes

TiO ，载体，加氢反应，制备，条件氧化钛；氧化铝；选择加氢；二烯烃

In this work,α-Al〓O〓, form the high temperature calcined product of Al 〓 by Debye method, was used as raw material to fabricate alumina ceramics. The seed crystal was added by ball milling of pure α-Al〓O〓 and the alumina ceramics with elongated grains has been experimentally fabricated.

本研究通过拜耳法制备的工业氢氧化铝粉经高温煅烧过程分解转相得到高温稳定的α-氧化铝粉作为制备氧化铝陶瓷的原料，利用球磨过程的磨耗向氢氧化铝粉中引入高纯氧化铝作为晶种，制备出了具有长柱状晶的氧化铝陶瓷。

An intermediate oil type hydrocracking catalyst has carrier prepared from amorphous aluminosilicon, alumina, assistant phosphorus, adhesive and extruding aid through mixing, shaping, drying, and then hydrothermal treating, and contains the oxides of metals in families VIB and VIII, and phosphorus.

本发明涉及一种中油型加氢裂化催化剂及其制备方法，催化剂所用载体为无定形硅铝、氧化铝和助剂磷。无定形载体是将无定形硅铝、氧化铝、助剂、粘合剂和助挤剂混合、成型、干燥后进一步水热处理而制得的。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。