歐盟科技人員開(kāi)發(fā)出新型的二氧化碳吸收材料

歐盟第七研發(fā)框架計(jì)劃（FP7）資助250萬(wàn)歐元，由英國(guó)諾丁漢大學(xué)施羅德（SCHRODER）教授領(lǐng)導(dǎo)的一個(gè)歐洲研發(fā)團(tuán)隊(duì)，成功地研究開(kāi)發(fā)出一種新型的二氧化碳（CO2）吸收材料。

新材料被命名為NOTT-202a，具有專門獨(dú)特的吸收并儲(chǔ)存CO2的特性，可以被直接應(yīng)用于降低大氣中的CO2含量，也可以通過(guò)設(shè)計(jì)開(kāi)發(fā)出的新產(chǎn)品應(yīng)用于減少化石燃料燃燒過(guò)程中的CO2排放，屬于新型的碳捕獲及封存技術(shù)（CCS）材料。研究成果在最新一期的自然.材料雜志上發(fā)表。

新型材料獨(dú)特的結(jié)構(gòu)缺陷，顯示出強(qiáng)大的吸收CO2的能力。

研發(fā)團(tuán)隊(duì)的科技人員使用歐盟設(shè)立于英國(guó)的“鉆石光源”（Diamond Light Source）大型科研基礎(chǔ)設(shè)施，利用最先進(jìn)的X-射線粉末衍射測(cè)定技術(shù)工藝和自行設(shè)計(jì)開(kāi)發(fā)的計(jì)算機(jī)模擬系統(tǒng)，對(duì)開(kāi)發(fā)出的新型材料進(jìn)行了詳細(xì)的結(jié)構(gòu)分析測(cè)定，并在此基礎(chǔ)上確定和合理化新型材料的結(jié)構(gòu)及功能。

研發(fā)團(tuán)隊(duì)開(kāi)發(fā)出的新型材料為連鎖金屬有機(jī)框架結(jié)構(gòu)材料（Interlocked Metal Organic Framework），主要由四羧酸配體（Tetra-Carboxylate Ligands）組成。其結(jié)構(gòu)為銦（Indium）金屬中心綁定到中央原子的系列粒子或離子構(gòu)成，類似蜂巢狀圖案的材料結(jié)構(gòu)可以有效地保證有選擇性的專門吸收CO2，而其它的氣體如氮、甲烷和氫等，可以順利地通過(guò)材料結(jié)構(gòu)。

CO2被材料結(jié)構(gòu)中的納米孔束縛住，甚至在很低的溫度情況下，從而可實(shí)現(xiàn)CO2的捕獲及封存。

Potential carbon capture role for new CO2absorbing material

A novel porous material that has unique carbon dioxide retention properties has been developed through research led by The University of Notingham.

The findings, published in the prestigious peer-reviewed journal Nature Materials, form part of ongoing eff orts to develop new materials for gas storage applications and could have an impact in the advancement of new carbon capture products for reducing emissions from fossil fuel processes.

It focuses on the metal organic framework NOTT-202a, which has a unique honeycomb-like structural arrangement and can be considered to represent an entirely new class of porous material.

Click here for full story Most importantly, the material structure allows selective adsorption of carbon dioxide — while other gases such as nitrogen, methane and hydrogen can pass back through, the carbon dioxide remains trapped in the materials nanopores, even at low temperatures.

Unique material

Lead researcher Professor Martin Schr?der, in the University’s School of Chemistry, said:“The unique defect structure that this new material shows can be correlated directly to its gas adsorption properties.Detailed analyses via structure determination and computational modelling have been critical in determining and rationalising the structure and function of this material.”

The research team — which is included Dr Sihai Yang, Professor Alexander Blake, Professor Neil Champness and Dr Elena Bichoutskaia at Nottingham —collaborated on the project with colleagues at the University of Newcastle and Diamond Light Source and STFC Daresbury Laboratory.

NOTT-202a consists of a tetra-carboxylate ligands — a honeycomb like structure made of a series of molecules or ions bound to a central metal atom — and fi lled with indium metal centres.This forms a novel structure consisting of two interlocked frameworks.

Innovative solutions

State-of-the-art X-ray powder diff raction measurements at Diamond Light Source and advanced computer modelling were used to probe and gain insight into the unique carbon dioxide capturing properties of the material.

The study has been funded by the ERC Advanced Grant COORDSPACE and by an EPSRC Programme Grant ChemEnSus aimed at applying coordination chemistry to the generation of new multi-functional porous materials that could provide innovative solutions for key issues around environmental and chemical sustainability.These projects incorporate multi-disciplinary collaborations across chemistry, physics and materials science, and aim to develop new materials that could have application in gas storage, sieving and purification, carbon capture, chemical reactivity and sensing.