Oxygen vacancy regulated selective hydrogenation of α,β-unsaturated aldehydes over LDH surface group coordinated transition metal photocatalysts

Zhang Jin; Gao Mengting; Wang RuiyiLi XinchengZhu PengqiWang YunweiZheng Zhanfeng

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Oxygen vacancy regulated selective hydrogenation of α,β-unsaturated aldehydes over LDH surface group coordinated transition metal photocatalysts

机译：Oxygen vacancy regulated selective hydrogenation of α,β-unsaturated aldehydes over LDH surface group coordinated transition metal photocatalysts

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Selective hydrogenation of α,β-unsaturated aldehydes under mild conditions is a great challenge in the synthesis of the corresponding alcohols. Herein, we report that a series of oxygen vacancy enriched MgAl-LDH coordinated transition metal hydroxide M(OH)x (M = Ru, Pt, Pd, Ag, Rh, Fe, Co, Ni and Cu) photocatalysts were successfully prepared taking advantage of the “memory effect” of MgAl-LDH. A high yield of α,β-unsaturated alcohols was achieved under visible light irradiation. DFT simulations and DRIFTS results show that oxygen vacancies facilitate the adsorption of –CO groups and hinder the adsorption of –CC groups in cinnamaldehyde, which ensures the high selectivity to cinnamyl alcohol. The highly dispersed and electron-rich transition metal hydroxides facilitated the activation of isopropanol to provide active H species under light irradiation and then enhanced the photocatalytic performance. This study demonstrated oxygen vacancy enriched MgAl-LDH supported transition metal hydroxide M(OH)x photocatalysts for efficient selective hydrogenation under visible light irradiation.

机译：选择性加氢的α,β不饱和在温和条件下醛是一个伟大的在合成相应的挑战醇。氧空位浓度MgAl-LDH协调过渡金属氢氧化物M (OH) x (M =俄文、Pt、成功利用做好准备了吗MgAl-LDH的“记忆效应”。α,β不饱和醇类实现可见光照射。结果表明,氧空位组织和促进- c的吸附O阻碍- C的吸附C组肉桂醛,这确保了高苯丙烯醇的选择性。分散和负电子的过渡金属氢氧化物的激活异丙醇提供积极的H下物种光照射,然后提高了光催化性能。展示了氧空位浓度MgAl-LDH过渡金属氢氧化物M (OH) x的支持论文的高效选择性可见光照射下加氢。

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《Catalysis science & technology》 |2022年第20期|6163-6173|共11页
作者
Zhang Jin; Gao Mengting; Wang RuiyiLi XinchengZhu PengqiWang YunweiZheng Zhanfeng;
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Institute of Coal Chemistry, Chinese Academy of Sciences;

Third Hospital of Shanxi Medical University;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
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Oxygen vacancy regulated selective hydrogenation of α,β-unsaturated aldehydes over LDH surface group coordinated transition metal photocatalysts

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