Developing almond shell-derived activated carbons as CO2 adsorbents

被引：177

作者：

Plaza, M. G. ^{[1
]}

Pevida, C. ^{[1
]}

Martin, C. F. ^{[1
]}

Fermoso, J. ^{[1
]}

Pis, J. J. ^{[1
]}

Rubiera, F. ^{[1
]}

机构：

[1] CSIC, Inst Nacl Carbon, E-33080 Oviedo, Spain

来源：

SEPARATION AND PURIFICATION TECHNOLOGY | 2010年 / 71卷 / 01期

关键词：

Adsorption; CO2; capture; Activated carbon; Amination; OXIDATION REACTIONS; SURFACE GROUPS; ADSORPTION; CAPTURE; AMMONIA; DIOXIDE; OXYGEN; GAS; GASIFICATION; ENHANCEMENT;

D O I：

10.1016/j.seppur.2009.11.008

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

Two series of carbon dioxide adsorbents were prepared from almond shells, by carbonisation followed either by activation with CO2 or by heat treatment in the presence of ammonia gas (amination). Both procedures gave carbons with high CO2 adsorption capacities in pure CO2 as well as in a binary mixture of 15% CO2 in N-2. Activation with carbon dioxide significantly developed porosity in the samples, mostly in the micropore domain, while amination at 800 degrees C moderately developed narrow microporosity in the char and incorporated stable nitrogen functionalities, which enhanced CO2 selectivity. Amination showed two additional advantages over conventional activation with CO2: a greater carbon yield and a shorter soaking time. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：102 / 106

页数：5

共 32 条

[1] Adsorption/oxidation of hydrogen sulfide on nitrogen-containing activated carbons [J].