Mesoporous calcium oxide–silica and magnesium oxide–silica composites for CO2 capture at ambient and elevated temperatures

2016 ◽  
Vol 4 (28) ◽  
pp. 10914-10924 ◽  
Author(s):  
Chamila Gunathilake ◽  
Mietek Jaroniec
Keyword(s):  
Greenhouse Gases ◽  
Porous Materials ◽  
Magnesium Oxide ◽  
Calcium Oxide ◽  
Co2 Capture ◽  
Elevated Temperatures ◽  
Metal Species ◽  
Basic Metal

Incorporation of basic metal species (oxides) such as magnesium oxide and calcium oxide into porous materials is a logical strategy for enlarging the uptake of acidic greenhouse gases such as CO2.

scholarly journals Recent advances in integrated CO2 capture and utilization: A review

2021 ◽  
Author(s):  
Shuzhuang Sun ◽  
Hongman Sun ◽  
Paul T Williams ◽  
Chunfei Wu
Keyword(s):  
Greenhouse Gases ◽  
Co2 Emissions ◽  
Co2 Capture ◽  
Fossil Fuels ◽  
Environmental Issues ◽  
Research Attention ◽  
Recent Advances

CO2 is one of the most important greenhouse gases leading to severe environmental issues. The increase of CO2 emissions from the consumption of fossil fuels has received much research attention....

Interfacial assembled preparation of porous carbon composites for selective CO2 capture at elevated temperatures

2019 ◽  
Vol 7 (10) ◽  
pp. 5402-5408 ◽  
Author(s):  
Li-Ping Guo ◽  
Wen-Cui Li ◽  
Bin Qiu ◽  
Zhan-Xin Ren ◽  
Jie Du ◽  
...  
Keyword(s):  
Co2 Capture ◽  
Porous Carbon ◽  
Elevated Temperatures ◽  
Carbon Composites

Interfacial assembled preparation of nanoclay integrated porous carbon composites shows superior CO2 capture performance at elevated temperatures.

Effectiveness of Steam Treating Method on Inhibiting the Expansive Problem of Concrete with Slag as Aggregate

2013 ◽  
Vol 723 ◽  
pp. 609-616
Author(s):  
Wei Chien Wang ◽  
Chih Chien Liu ◽  
Chau Lee
Keyword(s):  
Magnesium Oxide ◽  
Calcium Oxide ◽  
Steel Industry ◽  
Volume Expansion ◽  
Steam Treatment ◽  
Free Calcium ◽  
Concrete Aggregate ◽  
Furnace Slag ◽  
By Products

The furnace slag are the by-products of the steel industry, the main ingredients are the oxide of calcium, alumina and magnesium, and some silica. Slag used as concrete aggregate could cause the problem of the volume expansion of concrete. The expansion problem may be produced by ASR or free calcium oxide and magnesium oxide in slag. This research stabilizing the non-ASR reactive slag using steam treatment analyzes the effectiveness of steam treating technique inhibiting the expansive problem for slag used in concrete. And this paper also discusses the effect of the steam treating time on the performance of inhibiting the expansive problem.

CO2 Capture Using Calcium Oxide Applicable to In-Situ Separation of CO2 From H2 Production Processes

2013 ◽  
Author(s):  
Saeed Danaei Kenarsari ◽  
Yuan Zheng
Keyword(s):  
Calcium Oxide ◽  
Co2 Capture ◽  
Fixed Bed ◽  
H2 Production ◽  
Fixed Bed Reactor ◽  
Capture Process ◽  
Conversion Rates ◽  
In Situ Separation ◽  
Separation Of Co2

A lab-scale CO2 capture system is designed, fabricated, and tested for performing CO2 capture via carbonation of very fine calcium oxide (CaO) with particle size in micrometers. This system includes a fixed-bed reactor made of stainless steel (12.7 mm in diameter and 76.2 mm long) packed with calcium oxide particles dispersed in sand particles; heated and maintained at a certain temperature (500–550°C) during each experiment. The pressure along the reactor can be kept constant using a back pressure regulator. The conditions of the tests are relevant to separation of CO2 from combustion/gasification flue gases and in-situ CO2 capture process. The inlet flow, 1% CO2 and 99% N2, goes through the reactor at the flow rate of 150 mL/min (at standard conditions). The CO2 percentage of the outlet gas is monitored and recorded by a portable CO2 analyzer. Using the outlet composition, the conversion of calcium oxide is figured and employed to develop the kinetics model. The results indicate that the rates of carbonation reactions considerably increase with raising the temperature from 500°C to 550°C. The conversion rates of CaO-carbonation are well fitted to a shrinking core model which combines chemical reaction controlled and diffusion controlled models.

Integrated CO2 Capture and Conversion as an Efficient Process for Fuels from Greenhouse Gases

ACS Catalysis ◽  
2018 ◽  
Vol 8 (4) ◽  
pp. 2815-2823 ◽  
Author(s):  
Sung Min Kim ◽  
Paula M. Abdala ◽  
Marcin Broda ◽  
Davood Hosseini ◽  
Christophe Copéret ◽  
...  
Keyword(s):  
Greenhouse Gases ◽  
Co2 Capture ◽  
Efficient Process

Development of novel nano/meso-porous materials for CO2 capture & separation

2005 ◽  
pp. 1921-1924
Author(s):  
N YAMAMOTO ◽  
N HIYOSHI ◽  
K YOGO ◽  
T YASHIMA ◽  
K YANADA
Keyword(s):  
Porous Materials ◽  
Co2 Capture
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