Institutional Repository of Institute of Process Engineering, CAS (IPE-IR）
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Self-deployed Projects of Ganjiang Innovation Academy, Chinese Academy of Sciences[E155D001]
No full textProject of Hetao Shenzhen-Hong Kong University of Science and Technology Innovation Cooperation Zone[HZQB-KCZYB 2020083]
No full textA novel gas removal method for the removal of C2H2 in calcium carbide slag slurry by fine bubbles combined with air purging: performance, mechanism, and in situ bubble imaging analysis
No full textAbout 60% of carbon emissions in the cement industry come from the decomposition of limestone. As a key low -carbon technology of raw material substitution, calcium carbide slag (CCS, low-carbon calcareous material) can replace limestone to produce cement, desulfurizer, and other products, which can achieve carbon emission reduction and the upcycling of CCS. However, the release of residual C2H2 in CCS brings safety and environ-mental risks, which seriously restricts the upcycling of CCS. In this study, a novel gas removal method of fine bubbles (FBs) degassing was proposed for the removal of C2H2 in solid CCS particles, and an advanced in situ bubble imaging technology was used to investigate the performance and mechanism of C2H2 removal. The results indicated that approximately 70% of C2H2 (encapsulated C2H2) in CCS was difficult to remove by drying or slurrying. Under the optimal condition, the C2H2 removal efficiency was approximately 61.0%, and the amount of C2H2 released from the CCS slurry decreased by 92.9%. In the process of FBs degassing, large CCS particles in the CCS slurry were broken up into fine particles via the erosion mechanism, thus promoting the reaction of the encapsulated calcium carbide with water to produce C2H2. The generated C2H2 was dissolved in the slurry and could be quickly removed by FBs (<500 mu m) with a fast mass transfer rate under the slight negative pressure. This work provides a novel gas removal method for effectively removing C2H2 in CCS and avoiding security and environmental risks, provides technical support for the upcycling of CCS, and provides a reference for the sep-aration of other similar multiphase systems (e.g., gas-liquid/gas-liquid-solid, oil-liquid/oil-liquid-solid)
Independent Research of State Key Laboratory of Multiphase Complex Systems, Institute of Process Engineering, Chinese Academy of Science[MPCS-202A-03]
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State Key Laboratory of Biochemical Engineering, Institute of Process Engineering, Chinese Academy of Sciences
No full textPreparation, characterization, and physicochemical property of the inclusion complexes of Cannabisin A with ,B-cyclodextrin and hydroxypropyl- ,B-cyclodextrin
No full textCannabisin A (CA), derived from hemp seed shells, has antioxidant and anti-neuroinflammatory activity. However, its application is limited due to its poor solubility. In this work, ,B-cyclodextrin ( ,B-CD) and HP-,B-cyclodextrin (HP -,B-) were used to encapsulate CA to increase its water-solubility. The inclusion complexes of CA with ,B-CD (CA/,B-CD IC) and the inclusion complexes of CA with HP -,B-CD (CA/HP-,B- CD IC) were prepared by the aqueous ethanol solution method. The Job's plot assay and Phase solubility assay revealed that the inclusion complexes of CA with ,B-CD/HP-,B-CD formed at a 1:1 stoichiometric ratio. However, considering the inclusion process is reversible, the inclusion complexes were prepared at a 1:2 molar ratio. The structure of the inclusion complexes was identified by FT-IR, XRD, DSC, SEM, and NMR. In addition, the results of1 H NMR, 2D ROESY NMR, and molecular docking further determined the possible conformations of the inclusion complexes. The solubility of the CA in the CA/,B-CD IC and CA/HP-,B-CD IC was increased by 13.95-fold and 56.37-fold, respectively, compared to pure CA; and the dissolution and antioxidant activity of the CA were also significantly promoted after complexation. This study proved that CA/HP-,B-CD IC was the preferred inclusion complex compared to CA/,B-CD IC due to its better physicochemical properties. (c) 2022 Published by Elsevier B.V
Recent progress of hollow structure platform in assisting oxygen evolution reaction
No full textHydrogen production by water electrolysis has received extensive attention, mainly due to the fact that the process does not emit carbon dioxide and other pollutants. Whereas, the kinetic process of the anodic oxygen evolution reaction (OER) is very sluggish due to the four-electron proton coupling mechanism, which seriously affects the hydrogen production efficiency. The development and use of high-performance oxygen evolution electrocatalysts is an important way to improve the kinetics of OER processes. As an electrocatalyst platform, the hollow structure exhibits unique advantages in assisting the OER process. This review summarizes and discusses the advantages and disadvantages and improvement strategies of hollow structures, construction strategies, types of hollow structures and synthetic methods as well as unique advantages in facilitating the OER process. We focus on the role of hollow materials with different compositions and morphologies in promoting the OER reaction. In addition, this review also discusses the problems and challenges of hollow structure fabrics, and discusses the corresponding solution strategies and future development directions
