tapo

The isomerization selectivity of xylene over TAPO 5 is related to the intensity of Bronsted acid center .

TAPO－5异构化的选择性大小与B酸中心的强度有关。

China 's aircraft will come from Uzbekistan 's Tashkent Aviation Production Organisation ( TAPO ) plant in Tashkent , where assembly of all Il-76 variants is located .

中国的飞机将来自乌兹别克斯坦塔什克的塔什克飞机生产组织（TAPO）的车间，所有的伊尔-76发展型号的飞机都是在这里组装的。

The results show that the gold assistant extraction effects of the modifiers accord with their basicity order , that is the order of their forwarding electrons : TAPO > TBP > MIBK > ROH > BIOSO .

试验结果表明：改性剂对萃金的助萃效果与它们的碱性强弱顺序一致，即与它们的给电子能力的顺序一致，为TAPO>TBP>MIBK>ROH>BIOSO。

AlPO 4 5 , SAPO 5 and TAPO 5 molecular sieves which were synthesized by hydrothermal method were used as the catalysts of isomerization of m xylene . The property of isomerization is evaluated and the structure and acidity of the three catalysts are characterized .

首次用自制的AlPO4－5，SAPO－5和TAPO－5分子筛作为间二甲苯异构化催化剂，对其催化性能进行了评价，并对3种催化剂的结构和酸性进行了表征。

It was indicated by correlating the acidity and the property of isomerization that the Bronsted acid is the active center of m xylene isomerization , TAPO 5 has the highest isomerization activity ( 54.93 % ) and selectivity ( 93.41 % ) because of their highest Bronsted acid center .

将表征结果与催化性能相关联得出：异构化性能的高低与B酸中心的密度有关，TAPO－5的B酸中心密度最大，其间二甲苯异构化的活性（54.93%）和选择性（93.41%）也最高。