Activation of N₂ by isolated small tungsten clusters at room temperature

详细信息    查看全文

• 作者：Ko-ichi Sugawara^a ; Wataru Yamaguchi^b ; Yukihiro Shimoi^c ; Junichi Murakami^d ; ^{j.murakami@aist.go.jp}
• 关键词：Tungsten cluster ; N2 activation ; Dissociation barrier
• 刊名：Chemical Physics Letters
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：667
• 期：Complete
• 页码：267-271
• 全文大小：867 K
• 卷排序：667

文摘

Reactions of N2 with H2O on gas-phase small tungsten clusters Wn+ (n = 3–5) yielding N2O were observed at room temperature. N2 is activated by W4+ and W5+ to a much greater extent than by W3+. The N2 activation is made possible by bridge adsorption geometry of N2 on W4+ and W5+. The activated N2 adsorption state survives at room temperature on the tungsten clusters. This is due to the high dissociation barrier for the activated N2 on the small clusters.