期刊
CHEMICAL PHYSICS LETTERS
卷 598, 期 -, 页码 108-112出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cplett.2014.03.003
关键词
-
资金
- DOE Office of Basic Energy Science
- 'Predictive theory of transition metal oxide catalysis' grant
- Department of Defense (DoD) through the National Defense Science & Engineering Graduate Fellowship (NDSEG) Program
The Haber-Bosch process for ammonia synthesis has been suggested to be the most important invention of the 20th century, and called the 'Bellwether reaction in heterogeneous catalysis'. We examine the catalyst requirements for a new low-pressure, low-temperature synthesis process. We show that the absence of such a process for conventional transition metal catalysts can be understood as a consequence of a scaling relation between the activation energy for N-2 dissociation and N adsorption energy found at the surface of these materials. A better catalyst cannot obey this scaling relation. We define the ideal scaling relation characterizing the most active catalyst possible, and show that it is theoretically possible to have a low pressure, low-temperature Haber-Bosch process. The challenge is to find new classes of catalyst materials with properties approaching the ideal, and we discuss the possibility that transition metal compounds have such properties. (C) 2014 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据