查询词典 impregnation

SO〓〓/M〓O〓 solid superacid was applied to the photocatalytic oxidation of organic pollutants for the first time. Porous SO〓〓/TiO〓 solid superacid catalysts with high specific surface area were prepared by sol-gel method. The photocatalytic degradation of bromomethane was used as model reaction. The influence of impregnation with H〓SO〓 solution on the structure of catalysts and their photocatalytic performance was systematically studied by using X-ray diffraction, X-ray photoelectron spectroscopy, N〓 sorption analysis applying BET method, UV-Vis diffuse reflectance spectroscopy, FTIR spectroscopy, O〓-TPD and photocatalytic activity measurement. The acidity of TiO〓-based catalysts was investigated by Hammett indicator method, NH〓-TPD and IR spectra of pyridine adsorbtion. The mechanism of superacidifing effects on photocatalytic performances such as the photocatalytic degradation rate of bromomethane, apparent kinetic constant and apparent quantum efficiency was discussed.The results indicated that SO〓〓 is combined with metal ions of TiO〓 in a chelating bidentate mode.

本文首次将SO〓〓/MxOy型固体超强酸催化剂用于光催化氧化有机污染物研究，采用溶胶-凝胶法制备了具有多孔性和大比表面结构的二氧化钛基固体超强酸光催化剂SO〓〓/TiO〓，以光催化降解溴代甲烷为模型反应，系统地研究了H〓SO〓浸渍处理对催化剂表面酸性及其气相光催化性能的影响，结合XRD、BET、XPS、FTIR、Hammett指示剂法、吡啶吸附红外光谱、NH〓-TPD、O〓-TPD、紫外可见漫反射光谱等多种表征手段，深入地讨论了超强酸化对TiO〓的改性机理，阐明了引起SO〓〓/TiO〓超强酸催化剂光催化降解溴代甲烷的转化率、表观反应速率常数和表观量子效率变化的本质原因。

The catalyst prepared by coprecipitation-impregnation has good catalytic performance of maleic anhydride hydrogenation to γ-butyrolactone.

共沉淀-浸渍法制备的20％CuO-20％SnO〓/Al〓O〓催化剂具有较好的顺酐加氢制γ-丁内酯活性，在280℃，顺酐转化率为94.4％，γ-丁内酯选择性为100.0％。

NaZSM-5 zeolites were modified by impregnation with metal nitrate and their catalytic properties for gas phase reaction of γ-butyrolactone and ethanolamine to give intermediate N-hydroxylethyl pyrrolidonewere studied.

采用金属盐溶液浸渍的方法对NaZSM-5分子筛进行改性，考察了ZSM-5分子筛对γ-丁内酯与乙醇胺之间气相反应合成N-羟乙基吡咯烷酮的催化性能。

Often repeated impregnation saliva, skin inflammation caused by lip weeks, small red spotted, small papules, chapped, is caused by small desquamative skin, and finally the formation of black-brown pigmentation.

经常反复的唾液浸渍，引起唇周皮肤炎症，出现红色小斑疹，小丘疹，皲裂，乃致皮肤有细小的脱屑，最后形成黑褐色的色素沉着。

Manganese oxides supported on SBA-15 Mn(subscript xO/SBA-15 were prepared by incipient wetness impregnation of SBA-15 with furfuryl alcohol solution of manganese acetylacetonate or manganese nitrate followed by removal of the carbon resulted from carbonized FA.

采用溶液浸渍法将乙酰丙酮锰或硝酸锰的糠醇溶液分别灌注到SBA-15的孔道内，一定条件下将糠醇碳化后再将碳烧除，即可得到高度分散的MnO/SBA-15复合催化剂。

Alumina-supported Pd catalysts were prepared by three different methods: impreg nation, sol-gel-impregnation and sol-gel.

摘 要：采用三种不同方法制备了氧化铝负载的Pd催化剂。

The impregnation and interlaminar shear strength of PET/epoxy composites with untreated and treated fibers are compared in order to study the effect of plasma treatment on the surface properties of PET.

通过比较处理前后浸润性、涤纶纤维/环氧复合材料的层间剪切强度，研究了冷等离子处理对涤纶纤维表面性质的影响。

The novel catalysts of Cu supported on ZnO, MgO modified with KF were prepared by the conventional impregnation method, and applied for the first time to the Heck reactions of iodobenzene with n-butyl acrylate as a model reaction.

KF水溶液浸渍MgO或ZnO载体为改性载体制备了负载铜催化剂，以卤苯与丙烯酸正丁酯的反应为模型，考察了对Heck反应的催化性能。

The catalyst was prepared by isochoric impregnation and had strong basicity.

考察了催化剂制备条件和反应条件对酯交换反应的影响。

Supported solid bases and metal oxide catalysts were prepared successfully by isochoric impregnation and the co-precipitation method, and were used for synthesis of biodiesel from transesterification of rapeseed oil and methanol. The high active solid base catalysts: KF/Al2O3, ZnO/La2O3 and La2O3 were found in this paper.

本文用等体积浸渍法和共沉淀法制备了负载型和金属氧化物型固体碱催化剂，并应用于催化菜籽油与甲醇酯交换合成生物柴油的反应，筛选出了高活性的KF/Al2O3，ZnO/La2O3和La2O3三种固体碱催化剂。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。