Article
Engineering, Environmental
Xinran Yu, Jing Li, Zhangxin Chen, Keliu Wu, Linyang Zhang, Sheng Yang, Gang Hui, Min Yang
Summary: Gas adsorption in kerogen can induce swelling, and a theoretical model is proposed to calculate excess adsorption isotherms coupling swelling. Results show stronger affinities of C2H6 and CO2 than CH4, but larger C2H6 size leads to smaller maximum adsorption amounts. A linear relationship between volumetric strain and adsorption amount is found for CH4, C2H6, and CO2 separately.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Energy & Fuels
Kristina Ariskina, Guillaume Galliero, Amael Obliger
Summary: This study examines the impact of the flexibility of kerogens' microstructure on the transport of adsorbed CO2. It develops a free volume model that takes into account the adsorption-induced swelling exhibited by flexible kerogen structures. The study shows that the swelling increases the free volume accessible to CO2 molecules, leading to faster diffusion as the fluid loading increases. The diffusive nature of transport suggests that the self-diffusion coefficient can be used as a proxy for the collective diffusion coefficient. The study also demonstrates the applicability of the free volume model to the transport of light alkanes and mixtures, simplifying transport modeling for geological applications.
Article
Energy & Fuels
Shoaib Memon, Runhua Feng, Muhammad Ali, Masood Ahmed Bhatti, Ausama Giwelli, Alireza Keshavarz, Quan Xie, Mohammad Sarmadivaleh
Summary: It has been found that the interaction between supercritical CO2 and shale during hydraulic fracturing can alter the petrophysical properties of the rock and result in a reduction of fracture aperture, thereby decreasing the post-fracturing productivity of the rock.
Article
Engineering, Chemical
Sandugash Tanirbergenova, Yerdos Ongarbayev, Yerbol Tileuberdi, Ainur Zhambolova, Ernar Kanzharkan, Zulkhair Mansurov
Summary: This study aimed to select the optimal solvents for the removal of asphaltene-resin-paraffin deposits based on the ARPDs of the Zhanaozen crude oil field. The most effective composite solvent was found to be a composition comprising a 50% gasoline fraction and a 50% kerosene fraction.
Article
Polymer Science
Cesar Miguel Ibarra-Garza, Cecilia D. Trevino-Quintanilla, Jaime Bonilla-Rios
Summary: The use of supercritical CO2 as a blowing agent for polymeric foams is becoming a trend. This study introduces a new testing methodology to improve the accuracy and repeatability of rheological characterization for PS-SCO2 samples, resulting in a more accurate measurement of viscoelastic properties.
Article
Chemistry, Multidisciplinary
Fernanda Dalto, Iwona Kuzniarska-Biernacka, Clara Pereira, Elsa Mesquita, Olivia Salome G. P. Soares, M. Fernando R. Pereira, Maria Joao Rosa, Ana S. Mestre, Ana P. Carvalho, Cristina Freire
Summary: TiO2-containing photocatalysts combined with carbon-based materials show promising performance in wastewater treatment. TiO2/AC composites exhibited efficient methylene blue removal, especially TiAC29 and TiAC60, and UV-induced photoregeneration was effective in enhancing adsorption capacity.
Article
Chemistry, Multidisciplinary
Xia Wang, Fuyin Ma, Shengtang Liu, Lixi Chen, Shunshun Xiong, Xing Dai, Bo Tai, Linwei He, Mengjia Yuan, Pinhong Mi, Shicheng Gong, Guodong Li, Yi Tao, Jun Wan, Long Chen, Xuhui Sun, Quan Tang, Linfeng He, Zaixing Yang, Zhifang Chai, Shuao Wang
Summary: Radon, a major culprit for lung cancer, can be efficiently captured by the metal-organic framework ZIF-7-Im guided by computational screening and modeling. This material can reduce the radon concentration in the environment to below the detection limit, showing a significant improvement in removal depth compared to activated charcoal.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Pengsong Li, Jiahui Bi, Jiyuan Liu, Yong Wang, Xinchen Kang, Xiaofu Sun, Jianling Zhang, Zhimin Liu, Qinggong Zhu, Buxing Han
Summary: CuGa catalyst promotes efficient electrocatalysis of CO2 to C2+ products at high current density through p-d orbital hybridization. The p-d hybridization of Cu and Ga enriches reactive sites, enhances the binding strength of the *CO intermediate, and facilitates C-C coupling. This strategy can be extended to other p-block metal-doped Cu catalysts to further enhance CO2 electroreduction for C2+ production. This is the first study to utilize p-d orbital hybridization interaction in a p block metal-doped Cu catalyst to promote electrochemical CO2 reduction to generate C2+ products.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Energy & Fuels
Chunyan Ma, Nan Wang, Nannan Ye, Xiaoyan Ji
Summary: The study compared the CO2 absorption capacity of three hybrid solvents based on [Bmim][OAc] and different cosolvents, with [Bmim][OAc]-DEPG250 showing the highest absorption capacity. The addition of DEPG250 significantly reduced the viscosity while maintaining comparable absorption capacity. Additionally, using [Bmim][OAc]-DEPG250 as a solvent resulted in a lower CO2 capture cost compared to aqueous amine solutions due to reduced utility costs.
Article
Chemistry, Physical
Luca Braglia, Francesco Tavani, Silvia Mauri, Raju Edla, Damjan Krizmancic, Alessandro Tofoni, Valentina Colombo, Paola D'Angelo, Piero Torelli
Summary: In this study, the location, structural properties, and reactivity of defective sites in the metal-organic framework HKUST-1 were investigated using ambient pressure operando soft X-ray absorption spectroscopy. The formation of Cu+ defective sites and characterization of Cu+/Cu2+ dimeric complexes arising from temperature treatment were reported. Furthermore, reversible adsorption and desorption of CO2 on the surface defective Cu+/Cu2+ sites were demonstrated.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2021)
Article
Environmental Sciences
L. Nagarajan, Panchamoorthy Saravanan, K. Kumaraguru, Sang-Woo Joo, Yasser Vasseghian, R. Rajeshkannan, M. Rajasimman
Summary: This study characterizes the performance of synthesized magnesium nanocomposites with graphene and validates their effectiveness in adsorbing CO2. The novelty lies in the use of magnesium oxide-decorated magnesium composites to capture CO2. The results show that Mg nanocomposites decked with multilayer graphene exhibit desirable CO2 adsorption performance under optimized experimental conditions.
Article
Chemistry, Multidisciplinary
Junchang Chen, Mingxing Zhang, Jie Shu, Shengtang Liu, Xiao Dong, Chunyang Li, Linwei He, Mengjia Yuan, Yutian Wu, Jiahui Xu, Duo Zhang, Fuyin Ma, Guozhong Wu, Zhifang Chai, Shuao Wang
Summary: Defective metal-organic frameworks (MOFs) with altered microstructures can be achieved through radiation, leading to enhanced crystallinity and sorption capability, as demonstrated in this study on ZIF-7.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Environmental Sciences
Christopher T. Reinhard, Noah J. Planavsky, Anu Khan
Summary: To achieve key climate goals, a massive carbon dioxide removal industry needs to be developed, requiring the simultaneous creation of regulatory frameworks and effective incentive structures. Currently, most capital flow, technological development, and monitoring and verification are led by the private sector. However, a shift is necessary to bring robust and responsible carbon removal to scale. In the short term, addressing flawed incentive structures is critical for transitioning to a stable and large-scale marketplace for durable carbon removal.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Selcuk Demir, Nuray Bilgin, Hamide Merve Cepni, Hiroyasu Furukawa, Fatih Yilmaz, Cigdem Altintas, Seda Keskin
Summary: Metal-organic frameworks (MOFs) are a new class of materials designed for specific purposes by careful selection of linkers and metal ions. Zr-based MOFs, such as UiO-67(bipy), are known for their high thermal and chemical stabilities, but may lack hydrolytic stability. By introducing hydrophobic methyl groups to the linker, as seen in MOF-553, water stability and CO2 adsorption capacity can be improved, making it advantageous for point-source CO2 capture.
DALTON TRANSACTIONS
(2021)
Article
Materials Science, Multidisciplinary
Mohd Avais, Subrata Chattopadhyay
Summary: The article presents a strategic approach for preparing processable hierarchical porous polymers through polymerization-induced self-assembly in water, leading to the formation of porous microgels which then undergo spontaneous cross-linking to form PPs. The hydrophobicity of chosen monomers plays a key role in controlling the morphology and porosity of the microgel, impacting the hierarchical porous morphology of the final PPs.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Energy & Fuels
Xueying Wang, Hongjian Ni, Ruihe Wang, Tianke Liu, Jingguo Xu
JOURNAL OF NATURAL GAS SCIENCE AND ENGINEERING
(2017)
Article
Energy & Fuels
Peng Wang, Hongjian Ni, Xueying Wang, Ruihe Wang
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2018)
Article
Energy & Fuels
Peng Wang, Hongjian Ni, Xueying Wang, Ruihe Wang, Shuangfang Lu
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2018)
Article
Energy & Fuels
Xueying Wang, Hongjian Ni, Ruihe Wang, Lei Zhang, Peng Wang
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2019)
Article
Energy & Fuels
Xueying Wang, Hongjian Ni, Ruihe Wang
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2019)
Article
Energy & Fuels
Xueying Wang, Hongjian Ni, Roman Shor, Ruihe Wang, Zhongmin Tang, Yuedong Sun
Summary: The paper proposes a model-based iterative feedforward controller for slide drilling, utilizing a validated drillstring dynamics model to predict control inputs and estimating friction parameters using surface torque curve and toolface orientation measurement to eliminate uncertainty. The designed controller achieves accurate toolface setting, reducing the cost and time needed for directional drilling.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Energy & Fuels
Xueying Wang, Hongjian Ni, Roman Shor, Ruihe Wang
Summary: The paper proposes a model-based optimization and control method to improve toolface control in slide drilling, introducing a new set of operating procedures based on surface rocking-pipe-assisted drilling technique. Simulation results show that the method can achieve control goals quickly and help determine optimum surface rocking parameters to reduce friction along the wellbore.
JOURNAL OF PETROLEUM SCIENCE AND ENGINEERING
(2021)
Article
Acoustics
Yong Wang, Hongjian Ni, Yiliu (Paul) Tu, Ruihe Wang, Xueying Wang, Heng Zhang, Jiaxue Lyu, Hongqiao Xie
Summary: This study focused on the impact of axial impact load on stick-slip vibration of a PDC bit, and developed a laboratory experiment device to suppress stick-slip vibration. The results showed that the axial impact force can reduce the amplitude of weight on bit and torque fluctuations, and increase the main frequency of torque to suppress stick-slip vibration.
SHOCK AND VIBRATION
(2021)
Article
Energy & Fuels
Shubin Liu, Hongjian Ni, Xueying Wang, Peng Wang, Ning Li
