查询词典 catalysts

Refineries. Other fuel-related research is evaluating greater use of ethanol in gasoline, removal of unwanted byproducts from fuel, identification of more effective refinery catalysts, potential molecular-level enhancements to fuel blends, and thermo-chemically converting cellulosic biomass – wood, corn stover and switch grass – into bio-oil.

其他相关燃料的研究正在评估在汽油中更多地使用乙醇，从燃料里移出不必要的副产品，确认更有效的炼油催化剂，对混合燃料增强潜在的分子水平以及用热化学法将纤维素生物质-木材，玉米秸秆和开关草-转化成生物油。

Effects of catalysts,reaction temperature and reaction time on the formation of PPDC were investigated.

实验考察了催化剂对反应的影响，并以Zn(CH3COO)2作催化剂确定了合适工艺条件。

Other catalysts could be a possible relaunch of Wharf's Diamond real-estate investment trust and a restructuring of the company's communications, media and entertainment segments, they add.

能推动该股上扬的其他动力还包括：九龙仓集团有可能重新启动其钻石房地产投资信托基金以及该公司的通讯、媒体和娱乐业务有可能重组。

Where the catalysts were prepared by micelle method, and followed by H-plasma pretreatment to obtain the well-distributed nanoparticles.

而其中的触媒是利用微胞合作再经过氢电浆前处理所形成分布均匀的金属奈米粒子。

Solid super acid catalyst composed of iron oxide as active component has obvious advantages in its simple preparation procedure, good catalytic activity, especialilly much cheaper in comparison with catalysts prepared by other metal oxides such as titanic oxide and zirconia, it\'s worthy of industrialized investigation for these reasons.

以铁氧化物为主要活性组分制备的固体超强酸催化剂具有制备工艺简单、催化活性较好，尤其是相对于钛、锆等其它金属氧化物所制备的固体超强酸催化剂具有价格低廉的突出优点，值得进一步进行工业化的研究。

A series of amorphous Ni-Sn-B/SiO 2 catalysts with different tin contents were prepared by salt impregnation and KBH 4 reduction.

采用化学还原法制备了一系列三元非晶态Ni Sn B/SiO2 催化剂，并考察了Sn含量对催化剂的苯乙酮选择加氢制备苯乙醇反应的活性及选择性的影响，同时对Sn改性前后的催化剂进行了系统的表征。

In the batch reaction with high ratio of substrate to catalysts, the rate ?controlling step was determined by measuring the concentration variation of produced L-alanine in solution.

在近似无限浴的条件下，通过测量间歇拆分反应产生的L-丙氨酸的浓度变化规律，判断反应过程中的速率控制步骤。

USY zeolite supports with different acid amounts were obtained by steam dealumination. Dual metal catalysts with a total loading of Pd and Pt of 1.15% were prepared by the ion-exchange method.

采用水蒸气脱铝获得表面酸量不同的USY载体，并用离子交换法制备了金属含量为1.15%的双金属催化剂。

On the other hand, sodium tungstate dehydrate complexed with oxalic acid can act as highly efficient catalysts for the transformation from alcohols to carbonyl compounds under controlled microwave irradiation and solvent-free conditions.

第二部分中，我们观察到，作为一种过程强化手段，微波具有显著的促进催化选择氧化反应加速进行的能力，这在多相的锰氧化合物体系和均相的钨酸钠—草酸催化体系中都有具体表现。

In this paper, weve prepared manganese and silver oxide catalysts in some way and studied their catalytic performance for decomposition of high concentration ozone under high humidity condition.

本论文用几种方法制备了含锰和银的臭氧分解催化剂，并考察了它们在高湿度条件下(相对湿度95％)对高浓度臭氧(浓度＞20mg／m~3)的催化分解活性。

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。