Iridium Nanodisks Intercalated Between Graphite Layers: Iridium Loading and Metal Particle Size

IF 2.1 4区化学 Q3 CHEMISTRY, PHYSICAL

Catalysis Surveys from Asia Pub Date : 2022-09-20 DOI:10.1007/s10563-022-09369-5

Masayuki Shirai, Sakura Kudo, Tomoki Sobu, Mika Sodeno, Shusuke Kato, Etty N. Kusumawati, Hidetaka Nanao

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引用次数: 1

Abstract

Iridium nanoparticles were synthesized between graphite layers by thermal treatment of the mixture of iridium chloride (IV) and graphite powder under chlorine atmosphere followed by hydrogen reduction (Ir-GIC). In Ir-GIC samples with 1–6 wt% iridium metal loadings, all iridium nanoparticles with disk-shape (iridium nanodisks) were located between graphite layers; however, iridium nanoparticles on graphite surface were also formed in addition to iridium nanodisks in the Ir-GIC samples with 8 and 10 wt% iridium metal loadings. Iridium nanodisks between graphite layers were highly active for cinnamaldehyde hydrogenation and selective to cinnamyl alcohol compared with the iridium particles on graphite surfaces.

Graphical Abstract

Iridium nanoparticles with disk-shape structure were synthesized between graphite layers by thermal treatment of the mixture of iridium chloride and graphite under chlorine pressure followed by hydrogen reduction.

Abstract Image

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嵌入石墨层之间的铱纳米片:铱负载和金属粒度

将氯化铱(IV)与石墨粉混合在氯气气氛下进行热处理，再进行氢还原(Ir-GIC)，在石墨层间合成了铱纳米颗粒。在1-6 wt%铱金属负载的Ir-GIC样品中，所有具有圆盘状的铱纳米颗粒(铱纳米盘)都位于石墨层之间;然而，在含有8 wt%和10 wt%铱金属的Ir-GIC样品中，除了铱纳米盘外，石墨表面还形成了铱纳米颗粒。与石墨表面的铱颗粒相比，石墨层间的铱纳米片对肉桂醛的加氢活性和对肉桂醇的选择性均较高。摘要将氯化铱和石墨的混合物在氯压下进行热处理，再进行氢还原，在石墨层间合成了具有圆盘状结构的纳米铱。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Catalysis Surveys from Asia 化学-物理化学

CiteScore

4.80

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Early dissemination of important findings from Asia which may lead to new concepts in catalyst design is the main aim of this journal. Rapid, invited, short reviews and perspectives from academia and industry will constitute the major part of Catalysis Surveys from Asia . Surveys of recent progress and activities in catalytic science and technology and related areas in Asia will be covered regularly as well. We would appreciate critical comments from colleagues throughout the world about articles in Catalysis Surveys from Asia . If requested and thought appropriate, the comments will be included in the journal. We will be very happy if this journal stimulates global communication between scientists and engineers in the world of catalysis.