Self-Regeneration of Cobalt and Nickel Catalysts Promoted with Bismuth for Non-deactivating Performance in Carbon Monoxide Hydrogenation,ACS Catalysis

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Self-Regeneration of Cobalt and Nickel Catalysts Promoted with Bismuth for Non-deactivating Performance in Carbon Monoxide Hydrogenation
ACS Catalysis ( IF 11.3 ) Pub Date : 2018-11-16 00:00:00 , DOI: 10.1021/acscatal.8b03991
Bang Gu ₁ , Mounib Bahri ₂ , Ovidiu Ersen ₂ , Andrei Khodakov ₁ , Vitaly V. Ordomsky _{1,

3}

Affiliation

Carbon monoxide hydrogenation over Co and Ni catalysts has provided important opportunities to store energy and to manufacture alternative renewable transportation fuels. Catalyst deactivation is one of the most serious issues restricting application of this reaction. Hereby, we propose a simple and efficient way to enhance the stability of supported cobalt and nickel catalysts via their promotion with bismuth. In the promoted catalysts, bismuth is localized at the interface between metal nanoparticles and the support covering the Co and Ni surface. Bismuth oxidation–reduction cycling during carbon monoxide hydrogenation results in the removal of deposited carbon and catalyst self-regeneration. Formation of the bismuth layer at the metal nanoparticles’ surface protects them against sintering.

中文翻译：

铋促进钴和镍催化剂的自再生，以实现一氧化碳加氢中的非失活性能

Co和Ni催化剂上的一氧化碳加氢为存储能量和制造替代性可再生运输燃料提供了重要机会。催化剂失活是限制该反应应用的最严重问题之一。因此，我们提出了一种简单有效的方法，通过用铋促进负载钴和镍催化剂的稳定性。在助催化剂中，铋位于金属纳米粒子与覆盖Co和Ni表面的载体之间的界面处。一氧化碳加氢过程中的铋氧化还原循环可除去沉积的碳并实现催化剂的自我再生。在金属纳米颗粒的表面上形成铋层可防止它们烧结。

更新日期：2018-11-16

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