周期性介孔有机硅纳米粒子在标准温度和压力下对 CO 的吸附

Periodic Mesoporous Organosilica Nanoparticles for CO Adsorption at Standard Temperature and Pressure.

机构信息

Capgemini Engineering, 75017 Paris, France.

ICGM, Univ Montpellier, CNRS, ENSCM, 34293 Montpellier, France.

出版信息

Molecules. 2022 Jun 30;27(13):4245. doi: 10.3390/molecules27134245.

DOI:10.3390/molecules27134245

PMID:35807490

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC9268279/

Abstract

(1) Background: Due to human activities, greenhouse gas (GHG) concentrations in the atmosphere are constantly rising, causing the greenhouse effect. Among GHGs, carbon dioxide (CO) is responsible for about two-thirds of the total energy imbalance which is the origin of the increase in the Earth's temperature. (2) Methods: In this field, we describe the development of periodic mesoporous organosilica nanoparticles (PMO NPs) used to capture and store CO present in the atmosphere. Several types of PMO NP (bis(triethoxysilyl)ethane (BTEE) as matrix, co-condensed with trialkoxysilylated aminopyridine (py) and trialkoxysilylated bipyridine (Etbipy and iPrbipy)) were synthesized by means of the sol-gel procedure, then characterized with different techniques (DLS, TEM, FTIR, BET). A systematic evaluation of CO adsorption was carried out at 298 K and 273 K, at low pressure. (3) Results: The best values of CO adsorption were obtained with 6% bipyridine: 1.045 mmol·g at 298 K and 2.26 mmol·g at 273 K. (4) Conclusions: The synthetized BTEE/aminopyridine or bipyridine PMO NPs showed significant results and could be promising for carbon capture and storage (CCS) application.

摘要

(1) 背景：由于人类活动，大气中的温室气体 (GHG) 浓度不断上升，导致温室效应。在这些温室气体中，二氧化碳 (CO) 约占总能量失衡的三分之二，是地球温度升高的根源。(2) 方法：在这一领域，我们描述了周期性介孔有机硅纳米粒子 (PMO NPs) 的开发，用于捕获和储存大气中存在的 CO。通过溶胶-凝胶法合成了几种类型的 PMO NP（双（三乙氧基硅基）乙烷 (BTEE) 作为基质，与三烷氧基硅基化的氨基吡啶 (py) 和三烷氧基硅基化的联吡啶 (Etbipy 和 iPrbipy) 共缩合），然后用不同的技术（DLS、TEM、FTIR、BET）进行了表征。在 298 K 和 273 K、低压下对 CO 吸附进行了系统评价。(3) 结果：在 298 K 时，含 6%联吡啶的 CO 吸附最佳值为 1.045 mmol·g，在 273 K 时为 2.26 mmol·g。(4) 结论：合成的 BTEE/氨基吡啶或联吡啶 PMO NPs 表现出显著的效果，可能是用于碳捕获和储存 (CCS) 的有前途的材料。