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4.162 Aktuelle Fachpublikationen zum Thema temperature

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Interfacial tension and contact angle measurements for the evaluation of CO2‐brine two‐phase flow characteristics in porous media

22.05.2015 | Yu Liu, Meiheriayi Mutailipu, Lanlan Jiang, Jiafei Zhao, Yongchen Song, Lingyu Chen, Environmental Progress, 2015

It is of great importance to investigate gas and water flow characteristics to better understand the geological CO2 sequestration process. The interfacial tension between CO2 and brine and the wettability of reservoir rocks are the most important parameters for two‐phase flow in porous media ...


Computational Study of the Rate Coefficients for the Reactions of NO2 with CH3NHNH, CH3NNH2, and CH2NHNH2

22.05.2015 | Nozomu Kanno; Hiroumi Tani; Yu Daimon; Hiroshi Terashima; Norihiko Yoshikawa; Mitsuo Koshi, Journal of Physical Chemistry A, 2015

The reactions of NO2 with cis-/trans-CH3NHNH, CH3NNH2 and CH2NHNH2 have been studied theoretically by quantum chemical calculations and steady-state unimolecular master equation analysis based on RRKM theory. The barrier heights for the roaming transition states between nitro (RNO2) and nitrite ...


Theoretical Study on the Dynamics of the Reaction of HNO(1A′) with HO2(2A″)

21.05.2015 | S. Hosein Mousavipour; S. Somayeh Asemani, Journal of Physical Chemistry A, 2015

We used stochastic one-dimensional chemical master equation (CME) simulation to gain insight into the dynamics of the reaction of HNO(1A′) with HO2(2A″). The reaction takes place over a multiwell, multichannel potential energy surface that is based on the computations at the CBS-QB3 level of ...


Effects of Sulfate during CO2 Attack on Portland Cement and Their Impacts on Mechanical Properties under Geologic CO2 Sequestration Conditions

21.05.2015 | Qingyun Li; Yun Mook Lim; Young-Shin Jun, Environmental Science & Technology, 2015

To investigate the effects of sulfate on CO2 attack on wellbore cement (i.e., chemical and mechanical alterations) during geologic CO2 sequestration (GCS), we reacted cement samples in brine with 0.05 M sulfate and 0.4 M NaCl at 95 °C under 100 bar of either N2 or supercritical CO2. The results ...


Sensors, Vol. 15, Pages 11823-11835: Highly Stable Liquid Metal-Based Pressure Sensor Integrated with a Microfluidic Channel

21.05.2015 | Jung, Taekeon ; Yang, Sung, Sensors, 2015

Pressure measurement is considered one of the key parameters in microfluidic systems. It has been widely used in various fields, such as in biology and biomedical fields. The electrical measurement method is the most widely investigated; however, it is unsuitable for microfluidic systems because ...


Molecular Dynamics Simulations of CO2/Water/Quartz Interfacial Properties: Impact of CO2 Dissolution in Water

21.05.2015 | Gina Javanbakht; Mohammad Sedghi; William Welch; Lamia Goual, Langmuir, 2015

The safe trapping of carbon dioxide (CO2) in deep saline aquifers is one of the major concerns of CO2 sequestration. The amount of capillary trapping is dominated by the capillary pressure of water and CO2 inside the reservoir, which in turn is controlled by the interfacial tension (IFT) and the ...


Matrimid‐based carbon tubular membranes: The effect of the polymer composition

20.05.2015 | Norazlianie Sazali, Wan Norharyati Wan Salleh, Nik Abdul Hadi Md Nordin, Zawati Harun, Ahmad Fauzi Ismail, Journal of Applied Polymer Science, 2015

ABSTRACT In this article, we present a development study of new membrane materials and enhancements of productive membranes to improve the current performance of polymeric membranes. Carbon membranes are a promising material for this matter as they offer an improvement in the gas‐separation ...


Simulation of the Swelling of High-Volatile Bituminous Coal during Pyrolysis. Part 2: Influence of the Maximum Particle Temperature

20.05.2015 | He Yang; Sufen Li; Thomas H. Fletcher; Ming Dong, Energy & Fuels, 2015

A model was established previously to predict the swelling ratio of high-volatile bituminous coal during pyrolysis based on the assumption that the structure of bubble distribution in the particle at the beginning of the plastic stage is a central bubble surrounded by many surrounding bubbles. ...


Phase Equilibrium for Gas Hydrates Formed from Deuterium Oxide

20.05.2015 | Masato Kida; Mizuho Watanabe; Yusuke Jin; Jiro Nagao, Journal of Chemical & Engineering Data, 2015

In this study, we measured the hydrate equilibrium conditions for simple methane, ethane, propane, and krypton hydrates formed from liquid/solid deuterium oxide in order to understand the effect of deuterium replacement in the host framework on the gas hydrate equilibrium conditions. We obtained ...


Effect of Molecular Weight of Polyethylene Glycol on the Equilibrium Dissociation Pressures of Methane Hydrate System

20.05.2015 | Deepjyoti Mech; Gaurav Pandey; Jitendra S. Sangwai, Journal of Chemical & Engineering Data, 2015

The experimental phase equilibrium data for methane (CH4) clathrate hydrates in the presence of polyethylene glycol (PEG) aqueous solutions with various number-average molecular weights of 200 kg/kmol (PEG-200), 400 kg/kmol (PEG-400), and 600 kg/kmol (PEG-600) for (0.077, 0.2, 0.4, 0.44 and 0.46) ...


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