Phase behavior of the carbon dioxide + 1-dodecanol system at high pressures

2016 ◽  
Vol 428 ◽  
pp. 62-75 ◽  
Author(s):  
Catinca Secuianu ◽  
Viorel Feroiu ◽  
Dan Geană
Keyword(s):  
Carbon Dioxide ◽  
Phase Behavior ◽  
High Pressures

scholarly journals Phase Equilibria for Carbon Capture and Storage

2020 ◽  
Author(s):  
Catinca Secuianu ◽  
Sergiu Sima
Keyword(s):  
Carbon Dioxide ◽  
Phase Equilibria ◽  
Phase Behavior ◽  
Phase Diagrams ◽  
Carbon Capture ◽  
Binary Systems ◽  
High Pressures ◽  
Carbon Capture And Storage ◽  
Organic Substances ◽  
And Storage

Carbon dioxide (CO2) is an important material in many industries but is also representing more than 80% of greenhouse gases (GHGs). Anthropogenic carbon dioxide accumulates in the atmosphere through burning fossil fuels (coal, oil, and natural gas) in power plants and energy production facilities, and solid waste, trees, and other biological materials. It is also the result of certain chemical reactions in different industry (e.g., cement and steel industries). Carbon capture and storage (CCS), among other options, is an essential technology for the cost-effective mitigation of anthropogenic CO2 emissions and could contribute approximately 20% to CO2 emission reductions by 2050, as recommended by International Energy Agency (IEA). Although CCS has enormous potential in numerous industries and petroleum refineries due their large CO2 emissions, a significant impediment to its utilization on a large scale remains both operating and capital costs. It is possible to reduce the costs of CCS for the cases where industrial processes generate pure or rich CO2 gas streams, but they are still an obstacle to its implementation. Therefore, significant interest was dedicated to the development of improved sorbents with increased CO2 capacity and/or reduced heat of regeneration. However, recent results show that phase equilibria, transport properties (e.g., viscosity, diffusion coefficients, etc.) and other thermophysical properties (e.g., heat capacity, density, etc.) could have a significant effect on the price of the carbon. In this context, we focused our research on the phase behavior of physical solvents for carbon dioxide capture. We studied the phase behavior of carbon dioxide and different classes of organic substances, to illustrate the functional group effect on the solvent ability to dissolve CO2. In this chapter, we explain the role of phase equilibria in carbon capture and storage. We describe an experimental setup to measure phase equilibria at high-pressures and working procedures for both phase equilibria and critical points. As experiments are usually expensive and very time consuming, we present briefly basic modeling of phase behavior using cubic equations of state. Phase diagrams for binary systems at high-pressures and their construction are explained. Several examples of phase behavior of carbon dioxide + different classes of organic substances binary systems at high-pressures with potential role in CCS are shown. Predictions of the global phase diagrams with different models are compared with experimental literature data.

Phase behavior of soybean oil, castor oil and their fatty acid ethyl esters in carbon dioxide at high pressures

2006 ◽  
Vol 37 (1) ◽  
pp. 29-37 ◽  
Author(s):  
P.M. Ndiaye ◽  
E. Franceschi ◽  
D. Oliveira ◽  
C. Dariva ◽  
F.W. Tavares ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Fatty Acid ◽  
Soybean Oil ◽  
Phase Behavior ◽  
Castor Oil ◽  
High Pressures ◽  
Fatty Acid Ethyl Esters ◽  
Ethyl Esters

Phase behavior of carbon dioxide+medroxyprogesterone acetate system at high pressures

2013 ◽  
Vol 349 ◽  
pp. 1-11 ◽  
Author(s):  
L.F. Pinto ◽  
S.B. Rodriguez-Reartes ◽  
M.L. Corazza ◽  
V.F. Cabral ◽  
P.H.H. de Araújo ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Phase Behavior ◽  
Medroxyprogesterone Acetate ◽  
High Pressures

scholarly journals Ab initio-enabled phase transition prediction of solid carbon dioxide at ultra-high temperatures

RSC Advances ◽  
2020 ◽  
Vol 10 (1) ◽  
pp. 236-243 ◽  
Author(s):  
Lei Huang ◽  
Yanqiang Han ◽  
Xiao He ◽  
Jinjin Li
Keyword(s):  
Phase Transition ◽  
Carbon Dioxide ◽  
Ab Initio ◽  
Phase Behavior ◽  
High Pressures ◽  
Solid Phase ◽  
Chemical Species ◽  
Solid Carbon ◽  
Solid Carbon Dioxide ◽  
Transition Prediction

Carbon dioxide is one of the fundamental chemical species on Earth, but its solid-phase behavior at high pressures is still far from well understood and some phases remain uncertain or unknown, which increases the challenge to predict its structures.

Extraction of lignin from sugar cane bagasse and Pinus taeda wood chips using ethanol–water mixtures and carbon dioxide at high pressures

2005 ◽  
Vol 36 (1) ◽  
pp. 31-39 ◽  
Author(s):  
Daniel Pasquini ◽  
Maria Teresa Borges Pimenta ◽  
Luiz Henrique Ferreira ◽  
Antonio Aprigio da Silva Curvelo
Keyword(s):  
Carbon Dioxide ◽  
Pinus Taeda ◽  
Sugar Cane ◽  
High Pressures ◽  
Sugar Cane Bagasse ◽  
Wood Chips

Phase Behavior of Hydrogenation of 2-tert-Butylphenol over a Charcoal-Supported Rhodium Catalyst in Carbon Dioxide Solvent†

2009 ◽  
Vol 54 (5) ◽  
pp. 1610-1612 ◽  
Author(s):  
Norihito Hiyoshi ◽  
Yoshio Masuda ◽  
Osamu Sato ◽  
Aritomo Yamaguchi ◽  
Chandrashekhar V. Rode ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Phase Behavior ◽  
Rhodium Catalyst ◽  
Supported Rhodium Catalyst
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