凯茵化工讯 沸石催化剂常用于化工和汽车工业，比如用于处理汽车尾气。美国一项新研究说，研究人员发现了一种前所未知的沸石催化剂起作用的机制，有望在此基础上开发出更好处理汽车尾气方法。

　　美国珀杜大学等机构研究人员在新一期《科学》杂志上报告说，他们利用粒子加速器产生的高能X射线，还有超级计算机，分析了沸石催化剂工作的机制。在沸石这种多孔材料中，大量直径仅1纳米的小孔里填有铜原子，这些铜原子是催化反应的活性部位。

　　新研究发现，沸石消光粉中铜原子彼此之间的联系在整个催化反应中有关键作用，如果调整铜原子在沸石内的分布，有可能加快反应过程，降低反应所需的温度。

　　目前汽车工业所用的一些处理尾气的催化剂在200摄氏度下有效工作，但随着汽车技术的发展，尾气温度将会下降，研究人员因此希望开发出可在150摄氏度条件下有效工作的催化剂。

New discovery is expected to make the zeolite catalyst better handle automobile exhaust

Kai Yan Chemical News Zeolite catalyst commonly used in chemical and automotive industries, such as for the treatment of automobile exhaust. A new study from the United States said researchers have discovered a mechanism by which a previously unknown zeolite catalyst can work, and it is hoped that a better way to deal with vehicle exhaust will be developed.

Researchers at the U.S. Department of Medicine, Purdue University and others report in a new issue of Science that they used high-energy X-rays produced by particle accelerators and supercomputers to analyze the mechanism of zeolite catalyst work. In porous materials such as zeolite, a large number of pores with a diameter of only 1 nanometer are filled with copper atoms, which are the active sites for catalytic reactions.

The new study found that the linkages between the copper atoms in zeolites play key roles in the overall catalytic reaction. If the distribution of copper atoms in the zeolite is adjusted, it is possible to speed up the reaction and reduce the temperature required for the reaction .

At present, some of the exhaust gas catalysts used in the automobile industry work effectively at 200 degrees Celsius, but with the development of automobile technology, the exhaust gas temperature will drop. Therefore, researchers hope to develop a catalyst that can operate at 150 degrees Celsius Catalyst for work.