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近日,中科院大连化物所复合氢化物材料化学研究组提出了双活性中心这一催化剂设计理论,并由此开发了过渡金属-氢化锂复合催化剂体系,实现了氨的低温催化合成。该研究不仅奠定了合成氨的工业基础,而且推动了当代催化和表面科学领域理论和技术的发展。双活性中心的构筑使氮气和氢气的活化及氮和氮氢基团的吸附发生在不同的活性中心上,从而打破了反应能与吸附能之间的限制关系,使氨的低温、低压合成成为可能。这一结
Recently, the research group of compound hydride materials chemistry of Dalian Institute of Chemical Physics, Chinese Academy of Sciences proposed a catalyst design theory of double active sites, and developed a transition metal-lithium hydride composite catalyst system to achieve low temperature catalytic synthesis of ammonia. This research not only laid the industrial foundation for ammonia synthesis, but also promoted the development of theory and technology in contemporary catalysis and surface science. The construction of bifunctional active sites enables the activation of nitrogen and hydrogen and the adsorption of nitrogen and nitrogen-hydrogen groups to occur at different active sites, thereby breaking the limit relationship between the reaction energy and the adsorption energy and making the synthesis of low-temperature and low-pressure ammonia into may. This knot