Bronsted acid

n.布朗斯泰德酸

双语例句

The formation mechanism of acid sites, mainly the formation mechanism of Bronsted acid sites in HY and REY zeolite as well as Lewis acid sites in matrices and zeolite of FCC catalysts are analyzed. 分析了催化裂化催化剂酸中心的形成机制，重点论述了HY沸石及REY沸石中B酸中心的形成机理，以及催化剂基质和沸石中L酸中心的产生途径。

Regioselective Nitration of Chlorobenzene in Bronsted Acid Ionic Liquid Bronsted酸离子液体的制备及其在氯苯选择性硝化中的应用研究

The Bronsted acid centres on the catalyst surface play an important role in the reaction. 分子筛表面质子酸中心在反应过程中起了重要作用。

Experimental results indicated that the catalytic activity was correlated closely with the acidity and the dimensional framework of the Bronsted acid site in catalysts. 结果表明：催化剂活性位的Bronsted酸强度和空间结构是影响催化剂活性和选择性的主要因素。

With urea-hydroperoxide as oxidant, the oxidation of styrene catalyzed by different TS-1 zeolites with or without Bronsted acid sites was investigated through in-situ MAS NMR method. 以过氧化氢尿素为氧化剂，采用原位固体核磁共振方法研究了不同硅钦比的分子筛样品催化苯乙烯的氧化反应。

To take the advantages of heteropolyacid and heteropolyacid salt being Bronsted acid, the oil soluable heteropolyacid additive I and the mixed additive II with its salt were synthesized. 利用杂多酸（盐）具有质子酸的特点，合成了油溶性的杂多酸助剂Ⅰ及与其盐的混合助剂Ⅱ。

The rate constant k from kinetic research and the number of strong Bronsted acid sites changed in a similar peaky curve pattern. The maxima of two curves were on the same sample with Si/ Al ratio about 8. 87. 动力学数据表明，样品裂化反应速度常数与强质子酸中心数随骨架Si/Al比增加具有平行的山峰形变化规律，Si/Al比为8.87附近的样品最高。

The results showed that the catalysts had Bronsted acid centers and the catalytic activity decreased with the rising of calcination temperature. 结果表明：催化剂表面存在明显的Bronsted酸中心，对缩酮化反应的催化活性好，且催化活性随灼烧温度的升高而降低。

Reduction of nickel ions provides both metal with catalytic function and Bronsted acid. 镍的还原在提供了主要的金属催化功能的同时产生了大量的质子酸。

An isomerization of light paraffin is promoted by the interaction between palladium and Bronsted acid site on external surface of mordenite. 钯在其表面富集，并与外表面上的质子酸中心协同作用，促进了轻质烷烃异构化反应。

A Study of Surface Acid on Mimic Silica Alumina Catalyst(ⅱ)& Lewis Acid and the Conversion Between Lewis Acid and Bronsted Acid 模拟硅铝催化剂上表面酸的研究（Ⅰ）&Lewis酸及Lewis酸和Bronsted酸之间的转变

The Bronsted acid in the zeolites oxidized ο-Ps readily, so that the ο-Ps lifetime τ_3 and τ_4 were reduced significantly in zeolite HY. o-Ps容易被沸石内的质子酸氧化，而使其湮没寿命τ3和τ4缩短。

On the surface of synthesized samples, 31P CP/ MAS NMR detects strong Bronsted acid sites, whereas no Lewis acid sites are present. ~（31）PCP／MASNMR结果证实所合成样品表面存在较强的B酸位，但无L酸；

The catalytic centers might be both active sites of Lewis acid and Bronsted acid. 树脂B的催化中心可能是Bronsted酸和Lewis酸点同时起作用。

Mannich reaction of aldehydes, ketones and amines catalyzed by Bronsted acid ionic liquids Bronsted酸离子液体催化的醛、酮、胺三组分Mannich反应

It is shown that Bronsted acid sites are mainly formed from the hydroxyl groups in the main channels of mordenite. 实验结果表明丝光沸石主孔道中结构羟基是沸石上质子酸中心的主要供体。

In the presence of steam, the Bronsted acid of the SO 2-4/ ZrO 2 superacid system plays an important role on the catalytic cracking of heavy oil. 在工业催化裂化高温水蒸汽流化的条件下，SO2－4／ZrO2超强酸体系中的B酸对重油催化裂化起着至关重要的作用。

The higher the absorbance ratio of Bronsted acid peak to Lewis acid peak ( i.e.AB/ AL) measured by infra-red absorption spectrum, the higher is the catalyst activity. The results show clearly that the Bronsted acid plays a dominant role in catalytic cracking reaction. 用红外光谱法测定了Bronsted酸峰与Lewis酸峰的吸光度（A）的比值，发现活性高的催化剂，其AB/AL值也高，说明在催化裂化反应中，Bronsted酸起主导作用。

By applying EHMO method, a series of mimic calculations have been performed for the surface acid of Silica-Alumina catalyst, the basic states of Bronsted acid and the influence of Silica-Alumina ratio on Bronsted acidity have been studied. 用EHMO方法对无定形硅铝催化剂上表面酸进行模拟计算，研究B酸存在的基本形式及硅铝比对B酸酸性的影响。

The β-zeolite with microwave radiation in synthesis and removing template had a higher total acid amount and an ideal distribution of Bronsted acid, and the optimum etherification activity. 微波合成样品经微波辐射脱除模板剂所得β沸石总酸量高，B酸分布好，醚化反应活性高。

IR results of pyridine adsorption reveal that supported samples have both Bronsted and Lewis acid centers, and 2-propanol dehydration is a Bronsted acid catalysed reaction. 吡啶吸附红外光谱结果显示负载样品同时具有B酸和L酸中心，异丙醇脱水催化反应发生在B酸位上。

The structure of intact Keggin species and the Bronsted acid sites originated from them is indispensable to THF polymerization. Along with the increase of Keggin-anion density and the weaken of destruction, the catalyst performances will greatly enhance. 催化剂中存在的完整的Keggin结构及由此产生的B酸位是其引发THF聚合所必需的，随载体表面完整Keggin结构密度的增大及其畸变程度减弱，催化剂的活性逐渐增强。

From the results it is concluded that the migration ability of Mo species into the zeolite channels strongly depends on the number of the Bronsted acid sites per unit cell. 结果表明：Mo物种迁移进入分子筛孔道的能力决定于分子筛B酸中心的数目大小。

With adding of the sodium hydroxide in this system, the selectivity of benzaldehyde was enhanced. 4. With urea-hydroperoxide as oxidant, the oxidation of styrene catalyzed by different TS-1 zeolites with or without Bronsted acid sites was investigated through in-situ MAS NMR method. 在反应体系中加入碱性物质中和产生的酸中心能提高苯甲醛的选择性。4.以过氧化氢尿素为氧化剂，采用原位固体核磁共振方法研究了不同硅钦比的分子筛样品催化苯乙烯的氧化反应。

While impregnation with the oxides of copper or zinc can further decrease the amount of Bronsted acid sites, meanwhile increase the amount of Lewis acid sites. 而铜、锌改性则进一步减少了催化剂表面的B酸中心同时增加了L酸中心。

The strong Bronsted acid sites of Ce ( IV) Y lead to the protonation of thiophene and CHE, but have no effect on the adsorption mode of toluene. Ce（Ⅳ）Y吸附剂的强B酸中心均引起噻吩和环己烯吸附方式的变化，生成相应的质子化产物，对甲苯的吸附方式无影响。