DataVXACS Applied Materials & InterfacesPaper
journal article·2021-03-10

Highly Stable and Recyclable Sequestration of CO2 Using Supported Melamine on Layered-Chain Clay Mineral

Jiangtao Peng, Haowei Sun, Jian Wang, Fagui Qiu, Peiping Zhang, Weikun Ning, Dan Zhang, Wenqing Li, Cundi Wei, Shiding Miao

ACS Applied Materials & Interfaces· Volume 13· Issue 9
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Source abstract

Abstract

A type of highly stable and recyclable clay-based composite was developed for sequestration of CO2, which was synthesized by loading melamine (MEL) onto attapulgite (ATT) via a wet impregnation method. The synthesized materials were characterized by N2 adsorption–desorption, Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TG), and transmission electron microscopy (TEM). By means of thermal and acidic treatments more active sites of ATT were exposed, and large surface areas were obtained. The MEL molecules were well combined with those exposed sites, which enhanced stability and cyclability for CO2 sequestration. On the basis of CO2 adsorption–desorption measurements, the composite of ATT-MEL was found to have a higher CO2 adsorption capacity (4.91 cm3/g) which was much higher than that of CO2 absorption on bare MEL (1.30 cm3/g) at 30 °C. After ten cycles of reusing, the composite exhibited even higher capacity for CO2 adsorption by an increased percentage of 5.91% (30 °C) and 5.77% (70 °C) compared to the capacity in the first cycle. The reason lies in the strong interaction between melamine and attapulgite matrix which was further confirmed by DFT calculations. The MEL was validated to have advantages over aliphatic amines (TEPA) in modifying ATT to get high stability of CO2-adsorbents.
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Research context

Composites

OpenAlex topics: Carbon Dioxide Capture Technologies · Membrane Separation and Gas Transport · Adsorption and Cooling Systems

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

School of Materials Science and Engineering, Solid Waste Recycling Engineering Research Center of Jilin Province, Open Research Laboratory for Physicochemical Testing Methods of Functional Minerals-Ministry of Natural Resources, Jilin University, Changchun 130000, China

State Key Laboratory of Mineral Processing, BGRIMM Technology Group, Beijing 100160, China

Key Laboratory of Mineral Resources in Northeast Asia, Ministry of Natural Resources, Changchun 130061, China

Key Laboratory of Automobile Materials of Ministry of Education, School of Materials Science and Engineering, Solid Waste Recycling Engineering Research Center of Jilin Province, Open Research Laboratory for Physicochemical Testing Methods of Functional Minerals-Ministry of Natural Resources, Jilin University, Changchun 130022, China

Funding

People's Government of Jilin Province · National Natural Science Foundation of China · Chinese Academy of Geological Sciences (Migration and Abnormal Source of Rare Earth and Trace Elements · Province/Jilin University co-construction project - funds for new materials · State Key Laboratory of Mineral Processing

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