Understanding CO2 Reduction Catalysts

了解二氧化碳减排催化剂

• 批准号: EP/M013839/1
• 负责人: David Payne
• 金额: $ 37.62万
• 依托单位: Imperial College London
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2015
• 资助国家: 英国
• 起止时间: 2015 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FM013839%2F1
• 关键词: Understanding; CO2; Reduction; Catalysts

The need to monitor the synthesis and catalytic performance of materials in-situ and in-operando is of critical importance if we are to find where the barriers to increased catalytic efficiency are, and understand and develop methodologies to circumvent them. Photoelectron spectroscopy (PES) is a widely used multidisciplinary technique widely used to study the composition and chemistry of material surfaces. It is an UHV technique, meaning that it is not possible to investigate the solid-gas interface and consequential reactivity. High-pressure photoelectron spectroscopy (HiPPES) is at the forefront of advanced surface characterization techniques as it now allows the measurement of surface chemistry and physics at near-environmental pressures that are highly relevant for technological applications. Whereas standard photoelectron spectroscopy is performed in the UHV (10-9 mbar) pressure range, HiPPES measurements are performed at pressures greater than 10 mbar. This means that surface reactions can be monitored under highly relevant conditions (e.g. as a function of pressure, temperature, humidity, acidity); in stark contrast to the strongly reducing conditions of a conventional spectrometer which not only provide no dynamic information, but may also actually alter the surface chemistry of the system under study. We aim to use the HiPPES technique to the surface chemistry taking place between copper nanoparticles and CO2. By monitoring the interactions of the gas-solid interface we aim to determine the nature of catalytic active sites, and propose evidence-based mechanisms for the reduction of CO2 on copper. We will study the surface chemistry as a function of temperature, co-adsorbates (such as water and O2) and pH. We hope to understand these nanocatalysts in greater detail, to raise the catalytic efficiency, or to discover new catalysts, thereby enabling the economic viability of carbon capture and utilisation technologies.

如果我们要找到提高催化效率的障碍，并了解和开发规避这些障碍的方法，那么原位和操作中监测材料的合成和催化性能至关重要。光电子能谱（PES）是一种广泛使用的多学科技术，广泛用于研究材料表面的成分和化学。这是一种特高压技术，这意味着不可能研究固气界面和随之而来的反应性。高压光电子能谱 (HiPPES) 处于先进表面表征技术的前沿，因为它现在可以在与技术应用高度相关的近环境压力下测量表面化学和物理。标准光电子能谱是在 UHV (10-9 mbar) 压力范围内进行的，而 HiPPES 测量是在大于 10 mbar 的压力下进行的。这意味着可以在高度相关的条件下监测表面反应（例如作为压力、温度、湿度、酸度的函数）；与传统光谱仪的强还原条件形成鲜明对比，传统光谱仪不仅不提供动态信息，而且实际上还可能改变所研究系统的表面化学。我们的目标是利用 HiPPES 技术来研究铜纳米颗粒和 CO2 之间发生的表面化学反应。通过监测气固界面的相互作用，我们的目标是确定催化活性位点的性质，并提出基于证据的铜上二氧化碳还原机制。我们将研究表面化学与温度、共吸附物（例如水和 O2）和 pH 值的关系。我们希望更详细地了解这些纳米催化剂，以提高催化效率，或发现新的催化剂，从而实现碳捕获和利用技术的经济可行性。

项目成果

Pd 2 Ga-Based Colloids as Highly Active Catalysts for the Hydrogenation of CO 2 to Methanol

Pd 2 Ga基胶体作为CO 2 加氢制甲醇的高活性催化剂

• DOI: http://dx.10.1021/acscatal.6b02928
• 发表时间: 2017
• 期刊: ACS Catalysis
• 影响因子: 12.9
• 作者: García

Reversible Redox Cycling of Well-Defined, Ultrasmall Cu/Cu2O Nanoparticles.

明确的超小 Cu/Cu2O 纳米颗粒的可逆氧化还原循环。

• DOI: 10.1021/acsnano.6b07694
• 发表时间: 2017-03-13
• 期刊: ACS nano
• 影响因子: 17.1
• 作者: Sebastian D. Pike;E. White;A. Regoutz;N. Sammy;D. Payne;Charlotte K. Williams;M. Shaffer
• 通讯作者: M. Shaffer

PdIn intermetallic nanoparticles for the Hydrogenation of CO2 to Methanol

PdIn 金属间纳米粒子用于 CO2 加氢制甲醇

• DOI: http://dx.10.1016/j.apcatb.2017.07.069
• 发表时间: 2018
• 期刊: Environmental
• 作者: García

Water uptake analysis of acceptor-doped lanthanum orthoniobates

受体掺杂原铌酸镧的吸水率分析

• DOI: http://dx.10.1007/s10973-019-08208-6
• 发表时间: 2019
• 期刊: Journal of Thermal Analysis and Calorimetry
• 影响因子: 4.4
• 作者: Mielewczyk

From Organometallic Zinc and Copper Complexes to Highly Active Colloidal Catalysts for the Conversion of CO 2 to Methanol

从有机金属锌和铜络合物到用于 CO 2 转化为甲醇的高活性胶体催化剂

• DOI: http://dx.10.1021/cs502038y
• 发表时间: 2015
• 期刊: ACS Catalysis
• 影响因子: 12.9
• 作者: Brown N