Highly permselective metal–organic framework (MOF) membranes would play a significant role in energy-efficient separation if they could be prepared in a sustainable manner, but it remains challenging, in particular, on tubular ceramic supports. In this work, we proposed a supercritical fluid (SCF) process to sustainably prepare tubular ZIF-8 membranes with high performance. Both the high quality of

In this article, composite materials PMoV2@UiO-66-X (X=H, NH2, NO2, SO3H) are prepared by using hydrothermal synthesis method, and then the surfaces of the composite materials are coated with mSiO2 shell to obtain three-layer coated catalysts PMoV2@UiO-66-X@mSiO2. The prepared catalysts were characterized by FT-IR, XRD, N2 adsorption desorption isotherms, SEM, and TEM. The catalytic oxidation desulfurization

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The efficient separation of CH4 from natural gas containing C2H6 and C3H8 impurities is an important topic. Previous work on the separation of CH4/C2H6/C3H8 mixtures often focuses on the C3H8/CH4 selectivity, inadvertently sidelining the critical importance of C2H6/CH4 selectivity. This oversight results in reduced CH₄ productivity and compromised separation efficiency, a phenomenon often termed as

Reducing catalyst costs and reaction energy consumption is a potent way to advance biorefinery energy from fundamental research to industrial implementation. Herein, we developed a series of low-cost CuCo/Al2O3 catalysts for hydrodeoxygenation of 5-hydroxymethylfurfural to biofuel 2,5-dimethylfuran (DMF). Combined characterizations showed CuCo alloy and Co@CuCo core–shell structures were successfully

The purification of gaseous olefins, such as C2H4 and C3H6, requires the efficient removal of trace CO2 impurities. However, the development of ideal adsorbents with high CO2/olefin selectivity has remained a challenge. In this study, we synthesized a novel adsorbent, denoted as PEI/DEA@FS, by modifying fumed silica (FS) with a combination of polyethylenimine (PEI) and diethanolamine (DEA). At 298 K

Electrochemical synthesis of green oxidants O3 and H2O2 is valuable for applications, but challenges persist in enhancing the O3 and H2O2 generation activity and combined application. Herein, we modulate the surface Ni active sites and oxygen vacancy defects content in Ni-Sb-SnO2 electrocatalysts to enhance selectivity for electrochemical ozone generation (EOP) and two-electron electrochemical oxygen

In this study, we investigated the detachment of an oil droplet from a wall surface by microbubbles (MBs) using the numerical simulation of a gas–liquid–liquid three-phase flow based on a phase-field model. A single MB was collided with an oil droplet adhered to a wall surface to determine whether the droplet would detach from the wall. It was confirmed that the oil droplet detached from the wall when

This article develops a safe reinforcement learning (SRL) algorithm for optimal control of nonlinear systems with input constraints. First, we design a novel performance index function by taking advantage of control Lyapunov-barrier functions (CLBF) with inherent safety and stability properties to ensure closed-loop stability and safety during operation under the optimal control policy. Additionally

Implementing interplant heat integration indirectly via intermediate fluid circuits is a reliable and promising means of enhancing the overall energy efficiency and reducing the carbon emissions of a chemical industrial zone. Although optimization-based sequential and simultaneous synthesis methods have been developed for interplant heat integration, obtaining optimal multi-plant indirect heat exchanger

CO2 emissions are the primary cause of global warming and climate anomalies. Reducing CO2 emissions to arrest or mitigate global warming has been a hot topic of discussion. Carbon Capture, Utilization and Storage (CCUS) is an effective carbon reduction technology, in which the chemical absorption method based on amine solution is the most promising and widely used carbon capture technology among the

The selective separation of C2H4/C2H6 pair is of paramount importance in the petrochemical industry, which is yet challenged by their similar polarities, shapes, and kinetic diameters. The use of carbonaceous adsorbents with molecular sieving capability holds great promise in achieving the desired selectivity and economically feasibility. However, such progress has been hindered by the typically wide

The deep removal of fine coke powders is an urgent need and remains a great challenge for the stable operation of the delayed coke system. Herein, a novel jet-swirl scrubber was developed. A combined approach utilizing CFD and DPM was employed to investigate the mechanism of droplet fragmentation. The results indicated that droplets underwent two stages of fragmentation in the convergent and throat

The wide application of surfactants has brought about severe contamination to environment, especially, in aqueous media. In this connection, efficient removal of surfactant residues in waters is essential. In the present work, a commonly used surfactant, sodium dodecyl benzene sulfonate (SDBS) was employed as a model surfactant for removal studies. A new adsorbent based on waste floral foam (FF) was

The conversion of CO2 into fuels via photoreduction is a promising method to reduce environmental pollution and alleviate the energy crisis. Herein, we report iron-based metal-organic frameworks (Fe-MOFs) that can host a photosensitizer Ru(dcbpy)3Cl2 (PS) to form a range of photocatalytic systems, PS-Fe-MOFs, that are capable of increasing the activity of CO2 conversion. Among the four Fe-MOFs and