Rigid molecular sieve is highly desirable in industrial gas separation, but persistently challenged by sluggish adsorption within inherent rigidity‐confined narrow sieving pores. Herein, we report a rigid carbon‐based molecular sieve featuring ink‐bottle bimodal sub‐nanopores for the ideal fast sieving separation of propylene/propane mixture. The tailor‐made narrow pore entrance, centered at 5.0 Å

Large‐scale bioreactors in industrial bioprocesses pose challenges due to extracellular concentration gradients and intracellular heterogeneity. This study introduces a novel approach integrating the method of moments with truncated normal distributions (MM‐TND) to model intracellular heterogeneity while maintaining computational feasibility compared to continuum simulations. The MM‐TND framework reconstructs

Deep eutectic solvents (DESs) are promising green solvents, yet their high and variable viscosity presents challenges in practical applications. Traditional viscosity measurements are labor‐intensive and time‐consuming due to numerous influencing factors. This study introduces a novel prediction framework integrating message passing neural networks (MPNN)‐graph attention networks (GAT)‐multilayer perceptron

Hydrogen peroxide (H2O2) is a platform green oxidant for high‐value chemical synthesis, but its centralized production hinders its widespread use in a safe manner. Here, we describe a practical tandem electro‐thermochemical H2O2‐mediated oxygenation platform for the synthesis of various high‐value oxygen‐containing compounds. The integration of solid‐electrolyte H2O2 electrosynthesis with heterogeneous

Microannular rotating bed (MARB) is a newly designed reactor that integrates high‐gravity fields and microscale effects to enable efficient liquid mixing. This study systematically investigated the hydrodynamic and liquid–liquid dispersion characteristics of the MARB, including residence time distribution, liquid holdup, energy dissipation rate, and Sauter mean diameter (d32). Mathematical correlations

Developing efficient and stable electrocatalysts for seawater splitting remains a huge challenge because of low catalytic selectivity and poor resistance to chlorine‐induced corrosion. Here, we developed a nickel‐iron layered double hydroxide nanosheets doped with chromium and sulfur dual atoms (Cr,S‐NiFe LDH). Cr,S‐NiFe LDH exhibited low overpotentials of 321 and 406 mV at industrial current densities

The drop viscosity may play an important role in determining drop size distribution in multiphase reactors. However, most of the existing breakage models could not reasonably predict the effect of drop viscosity in a relatively wide range. In this work, an improved model is developed by considering this effect on the breakage constraint and surface oscillation for multiple breakages. Besides, the whole

This study presents the development of a computational fluid dynamics model for predicting ultra‐low temperatures (less than −100°C). The frost formation rate was characterized using dimensionless numbers derived from operating conditions. To better capture the underlying physical phenomena of ultra‐low temperature frosting, various physical parameters were introduced and systematically adjusted. Additionally

Covalent organic frameworks (COFs), as potential heterogeneous catalysts, face the problem of single functional active sites in one‐pot catalysis. Herein, a polyoxometalate (POM) species, phosphomolybdic acid hydrate (PMA, H3PMo12O40) was stably integrated into the nanocages of an ionic COF (EB‐TFP). Considering practical applications, the resulting composite (EB‐TFP/PMA) powder was shaped into monolithic

Laminar‐structured covalent organic framework (COF) membranes hold great promise in molecular separation. Precise nanochannel manipulation of laminar‐structured COF membranes is of critical significance. In this study, COF membranes are engineered by assembling COF‐TbTG nanosheets and sulfobutylether‐β‐cyclodextrin (SCD) into laminar structures. The interlamellar spaces of COFs are regulated to achieve

The actual applications of extraction methods for α‐olefins separation are limited by their long time and high energy consumption. Hence, this study employs microwave technology to intensify the extraction process using Ag‐based ionic liquid (Ag‐IL), where the influence of microwave irradiation and the mechanism of microwave‐assisted ionic liquid extraction (MAILE) are investigated, along with a comprehensive

Despite the rapid development of micro‐extraction technology in recent years, achieving simple and robust countercurrent micro‐extraction remains a challenge. In this study, a novel rotating micro‐extractor was developed, and robust continuous countercurrent flow can be successfully achieved in it. The effect of device structure, operation condition, and system physical properties on the hydrodynamic

Click on the article title to read more.

Deep eutectic solvents (DESs) were regarded as promising absorbents in many absorption processes. Here, we use randomly methylated β‐cyclodextrin (RAMEB) to further improve the absorption capacity of DESs for aromatic VOCs. We found benzene and toluene vapor pressures obviously decreased after adding 2% RAMEB (molar fraction) to DESs. Dynamic absorption experiments also confirmed this enhancement effect;

The determination of the critical collision velocity for bubble coalescence plays a crucial role in predicting bubble size distribution within bubble column reactors through population balance modeling. In this study, experimental measurements in surfactant–laden systems demonstrate that even trace amounts of surfactant significantly reduce the critical velocity. We propose the Marrucci number—a dimensionless

Liquid α‐olefins are important basic chemical raw materials, and the solvent extraction is one of the effective methods for their separation. In this paper, Ag+ is used as the coordinating metal, and , which has a weak interaction with it, is selected as the anion. Based on the interaction between the carbonyl oxygen and −NH2, propionamide is selected as the organic ligand. Thus, a deep eutectic solvent

Alkali cations impose a conducive effect for acidic electrocatalytic CO2 reduction reaction (eCO2RR) to high‐value chemicals. However, the intrinsic configuration of active cations at complex electrode–electrolyte interfaces remains elusive, limiting the deployment of the cation effect. Herein, we identify the crucial effect of specific adsorption of K+ at electrode–electrolyte interfaces on improving

This study employs thermodynamic methods and molecular dynamics simulations to predict the CO2 absorption capacity, reaction free energies, and densities in aqueous solutions of 1‐dimethylamino‐2‐propanol (1DMA2P). By combining quantum chemical calculations and classical molecular dynamics with optimized force field parameters, the model accurately predicts solution densities, pH values, and CO2 absorption

A novel approach is proposed for producing 4‐ethylcyclohexanol, a versatile petrochemical in the polymer industry, from the renewable lignin in the presence of Cu–Ni/MgCrOx spinel catalysts. Under the synergistic effect between the Ni0, Cu,+ and the balanced acidic and basic properties of MgO and MgCr2O4, an exceptional yield of monomer (30.1 wt%) with 59.5% selectivity of 4‐ethylcyclohexanol (yield

Catalytic amine–based solution regeneration has attracted considerable attention due to its potential to reduce energy consumption in carbon dioxide (CO2) separation. However, the limited catalytic activity and cycling stability of catalysts under high–temperature alkaline conditions hinder their industrial application. Herein, zirconium hydrogenphosphate (ZrHP) catalysts, featuring abundant acidic

The design and synthesis of robust catalysts is the key to improving CO2 conversion in the reverse‐water gas shift (RWGS). In this article, the MoOx‐C catalyst supported on AlOOH (xMoOx‐C@AOH) is designed and synthesized by dielectric barrier discharge (DBD) plasma. The Mo‐C bonds of the MoOx‐C interface regulate the electronic structure of MoOx and promote the formation of oxygen vacancies. The catalyst

Metal‐support interaction (MSI) is of great significance for designing the supported metal catalysts with high catalytic activity and selectivity. In this work, the MSI between Co and the carbon layer in armored cobalt nanoparticle catalysts (Co@xC) is effectively regulated based on the channel confinement strategy. Notably, a direct volcanic relationship could be obtained between the MSI strength

The composition of lithium‐ion battery electrode slurry determines its rheological properties, which have a significant impact on defect control during the coating process and the final electrode microstructure. Due to the complexity of slurry composition, it is difficult to determine the quantitative relationship between the formulation and rheological properties through experimental analysis. Herein

Fluid flow behavior in packed columns is complex, with notable differences between the constant liquid hold‐up region and the flooding region. This study numerically investigates the gas–liquid flow behavior for various contact angle (CA) and liquid load (L) conditions in both regions, using the volume of fluid‐continuum surface force model. In the constant liquid hold‐up region, CA and L significantly

Methane dehydroaromatization (MDA) using Mo/zeolite catalysts is a promising technology that enables the direct conversion of methane into valuable aromatics and hydrogen. However, non‐oxidative MDA suffers two main obstacles: thermodynamic limitations and rapid catalyst deactivation. Additionally, oxidative MDA often undergoes undesired oxidation to CO, reducing product selectivity and hindering efficient

Ammonia (NH3) plays a vital role in fertilizer production, but an energy‐saving NH3 production process compared to the Haber–Bosch process is urgently being developed. A catalytic membrane reactor (CMR) that integrates the reaction with a Ru (10 wt%)/Cs/MgO catalyst and the membrane separation with a sulfonated (3‐mercaptopropyl)trimethoxysilane (MPTMS) membrane in one unit was used for green NH3 production

The conventional hydrodeoxygenation process for sustainable aviation fuel production using Al2O3‐supported Ni‐Mo sulfide catalyst faces dual challenges: sulfur contamination and catalyst hydrothermal instability. This work develops a hydrothermally stable 5% Ni/Nb2O5‐SiO2 catalyst, where strong metal‐support interaction drives Nb to Ni electron transfer to form oxygen vacancies activating oxygen‐rich

The cycloaddition of CO2 and epoxides can produce high‐value cyclic carbonates. This study developed a series of hydroxyl functional imidazolium‐based poly(ionic liquid)s (PILs) by copolymerization of ionic liquids ([HeVIM]Br or [BVIM]Br), 4‐vinylphenol, and divinylbenzene. The as‐synthesized PILs were investigated as catalysts for the cycloaddition of CO2 with epichlorohydrin, and higher catalytic

The cumene autoxidation process holds great significance in the chemical industry. However, existing kinetic models are marred by limitations such as prolonged reaction and sampling intervals, along with the failure to account for the impact of phenol, a key substance. In this work, in the microreactor system, we successfully realized high time resolution data acquisition (5–10 min) and used it to

This study provides an experimental validation of a multiple‐input multiple‐output (MIMO) model predictive control (MPC) strategy, coupled with dynamic risk modeling, to address two critical aspects of proton exchange membrane water electrolysis (PEMWE) operation: (i) process safety, by mitigating temperature imbalances, and (ii) system performance, through precise hydrogen production control. A cyber‐physical

This work proposes a novel strategy for enhancing Li+ extraction from salt‐lake brines with the high Mg2+/Li+ ratio using dicationic ionic liquid (DIL)‐based extractants. The ternary mixture of the DIL [DOMIM][Tf2N]2, tributyl phosphate (TBP), and dichloromethane (DCM) as a diluent achieved a higher single‐stage Li+ extraction efficiency (86.40%) and separation selectivity of Li+/Mg2+ (302.37) compared

Ion‐distillation, as an innovative electro‐membrane approach, efficiently separates various ions, revolutionizing the lithium mining industry. However, the suboptimal performance of ion perm‐selective membranes and the low concentration of lithium necessitate additional separation stages, thereby increasing energy consumption in industrial applications. To address this, we propose a novel packed‐bed

Photothermal CO2 hydrogenation into value‐added products represents an optimal strategy for simultaneously addressing energy and environmental crises. However, achieving high production with high selectivity for target products remains a grand challenge. Herein, we constructed an S‐scheme ZnO/CeO2 decorated by a bifunctional Pt cocatalyst. This photothermal catalyst exhibits both remarkable yield and

This experimental study investigates fault detection and estimation in a continuous stirred‐tank reactor (CSTR) system under closed‐loop feedback control, including an analysis of different manipulative inputs for temperature regulation. A novel fault diagnosis approach is proposed, combining residual signal analysis and T2 statistic for real‐time fault detection and size estimation. The closed‐loop

Metal promoters enhancing Au catalysts present a promising alternative to toxic mercury chloride. However, achieving an optimal balance between the synergistic benefits of metal promoters and challenges like coke formation remains a significant hurdle. Herein, a low‐loading Au catalyst (0.15 wt.%), synergistically modulated by copper and nickel (designated as AuCu16Ni/AC), was developed. The AuCu16Ni/AC

Pyrolysis, which converts macromolecules into smaller fragments in the absence of oxygen, offers a promising platform for synthetic polymer recycling. This sophisticated chemical network encompasses hundreds of reactions, yielding hundreds of molecular species and radicals as the process unfolds. We investigate the pyrolysis mechanism of polyvinyl chloride (PVC) using nanoreactor molecular dynamics

Metal–organic framework (MOF) glass holds great promise for gas separation applications. However, the inherent low porosity of MOF glass poses a considerable challenge in improving membrane permeability. In this work, a self‐supporting MOF crystal‐glass composite (CGC) membrane was synthesized via an innovative blending and melting approach, in which ZIF‐62 powder was converted into an amorphous glassy

This study compares the exergy supplied to a distillation column with the actual energy consumption of a heat pump‐assisted distillation (HPAD) system. It evaluates the reliability of exergy as a proxy for heat pump work demand in such systems. While exergy can serve as a reasonable approximation when the thermal duties of the source and sink are nearly equal, it is not a consistent indicator of heat

Sucrose phosphorylase (SPase) is widely used for the glycosylation of polyhydroxy compounds, while low regioselectivity will limit its application. In this study, the regioselectivity of wild‐type SPase from Limosilactobacillus reuteri for the synthesis of 2‐O‐α‐d‐glucosylglycerol (2‐αGG) (84.7% ± 0.5%) was enhanced by combinational semi‐rational strategies. A key residue R137 was identified by sequence

A high yield of up to 90% of 2,5‐bis(hydroxymethyl)furan (BHMF) was successfully achieved through the selective hydrogenation of high‐concentration (up to 20 wt%) 5‐hydroxymethylfurfural (HMF) utilizing a novel Ni catalyst supported by renewable carbon under mild reaction conditions (50°C) in an aqueous medium. The superior catalytic performance is attributed to the uniformly dispersed and small‐size

Norbornadiene (NBD) dimer is one of the most important high‐energy‐density fuels for aerospace propulsion, but it is difficult to synthesize with high efficiency. Herein, we fabricated nano‐cobalt loaded alkali‐treated HY zeolite, which significantly promotes the NBD dimerization reaction with a conversion of 73.5% and a selectivity of 84.7%, which is a 20% higher yield than previously reported catalysts

Maximizing the atom efficiency of noble metal species is crucial for their application, but directly reducing the size down to single atoms (SAs) is limited when facing complex situations requiring the simultaneous adsorption and activation of multiple reactants. Herein, Schiff base condensation of 1,3,5‐tris(4‐aminophenyl)benzene and 2,5‐dibromoterephthalaldehyde offered a Br‐tethered covalent organic

The Maxwell‐Stefan equation requires mutual diffusion coefficients between any two components and average concentration gradients to calculate multi‐component diffusion fluxes. However, empirical formulas for mutual diffusion coefficients have limitations due to the assumption of ideal gas or reliance on restricted experimental data, while standard molecular dynamics (MD) simulation requires a large

Gas–solid fluidized beds are widely used in industrial processes. Accurate and efficient simulations of the gas–solid flow dynamics and transfer are crucial for improving the design, scale–up, and optimization of the reactors. For this purpose, a dual–grid computational fluid dynamics and discrete element method (CFD–DEM) approach is developed to study the gas–solid heat transfer. The proposed approach

One‐step purification of ethylene (C2H4) from complex crude C2H4 products containing acetylene (C2H2), ethane (C2H6), and carbon dioxide (CO2) impurities is highly critical and desirable. Herein, we customize the pore environments with versatile and dense adsorption sites in a novel interpenetrated adsorbent, Zn‐mtz‐ina, to simultaneously remove C2H2, CO2, and C2H6 from C2H4. As a result, Zn‐mtz‐ina

Anodic electrochemical reactions in aqueous solutions often suffer from low Faradaic efficiency (FE) due to the competing oxygen evolution reaction (OER). To address this issue, the modification of carbon paper (CP) electrode is coupled with a membrane‐free biphasic electrochemical device. Scanning electron microscopy (SEM) and water contact angle measurements confirmed the hydrophobic properties of

The modernization of pharmaceutical manufacturing is driving a shift from traditional batch processing to continuous alternatives. Synthesizing end‐to‐end optimal (E2EO) manufacturing routes is crucial for the pharmaceutical industry, especially when considering multiple operating modes—such as batch, continuous, or hybrid (containing both batch and continuous steps). A major challenge is the ability

In this article, we study the resilience of process systems in an information‐theoretic framework, from the perspective of an attacker capable of optimally constructing data injection attacks. The attack aims to distract the stationary distributions of process variables and stay stealthy, simultaneously. The problem is formulated as designing a multivariate Gaussian distribution to maximize the Kullback‐Leibler

Selective hydrogenation of alkynes to alkenes is pivotal in the chemical industry. Pd‐containing materials have been proven to be effective catalysts, while balancing the activity‐selectivity trade‐off remains a significant challenge. Here we report the fabrication of Pd single atoms from the conversion of metal–organic polyhedra (MOPs) for the first time. The MOP (M6L4), constructed from Pd salt and

Strontium (Sr) is a primary radioactive substance that should be prioritized for removal from nuclear wastewater and hospital radioactive water. An efficient graphene oxide/hydroxyapatite adsorbent (GO/HAp) was investigated for the rapid adsorption of Sr2+. Herein, a kinetic and mechanism study of this system was implemented, and the morphology and structure of as‐prepared composites were characterized

Benzene, toluene, and xylene (BTX) are currently produced mainly through energy‐intensive naphtha reforming, with around half of the BTX output used for plastic production. Developing an efficient method to convert polyethylene (PE)—the most abundant plastic—into BTX is therefore critical for advancing the circular economy and achieving carbon neutrality. Here, we present a single‐step, hydrogen‐free

Understanding the role of subsurface dopants in photocatalysis is still highly challenging, although doping has always been one of the universal strategies for improving photocatalytic performance. Herein, Ce‐doped Bi2MoO6 monolayers were prepared for the photocatalytic C–N coupling reaction. Effects of subsurface Ce dopants on photocatalysis were investigated deeply via a series of characterizations

Click on the article title to read more.

Asymmetric reductive amination is essential for producing chiral amino acids, yet optimizing intracellular cofactor utilization for this process remains challenging. Herein, we developed a dual cofactor‐driven biocatalytic system (DuCoCat) that utilizes both intracellular NAD(H) and NADP(H). Initially, the cofactor dependence of a glutamate dehydrogenase (GluDH) was engineered to exhibit dual cofactor

The study of molecule transport within confined nanochannels is crucial to developing high‐performance membranes. Previous studies mainly focus on the interfacial molecule transport; however, the central molecule transport, equally crucial, has been disregarded. Herein, vertically aligned vermiculite‐based (Vr‐based) membranes with long‐range nanochannels are engineered to ensure a stable flow. Meanwhile

This article presents a unified theory that considers both particle friction and interstitial fluid effects for simulating gas–particle flow stress. For the first time, we proposed kinetic theory‐based solid stress equations that can simultaneously take into consideration the interstitial fluid effect at low solid volume fraction and the friction effect at high solid volume fraction. A smooth transition

In this work, we investigate the jamming behavior of associative microgel suspensions used as fluid loss additives in model porous media. We first construct a phase diagram using drying experiments, followed by characterization of the suspensions' rheology and the permeability of the filter cakes at maximum microgel concentration. Microfluidic devices are designed for frontal and lateral flow filtration

This work systematically investigates CO2 capture with hydrophobic halogen‐free natural deep eutectic solvents (NADES) as absorbents from both thermodynamic and molecular perspectives. A series of NADES consisting of decanoic acid, menthol, thymol, and lidocaine as hydrogen bond acceptors/donors (HBAs/HBDs) were prepared, and the CO2 solubility in them was determined experimentally. Perturbed‐Chain

Cyclopentyl methyl ether (CPME) is a promising green solvent due to its eco‐friendly properties; it is produced by adding methanol (MeOH) to cyclopentene. Separation of the resulting product mixture containing CPME and MeOH is critical, and it requires vapor‐liquid equilibrium (VLE) data. In this work, isobaric VLE data were measured experimentally using an ebulliometer in a 60.0–101.3 kPa pressure

The rotating foam stirrer reactor (RFSR) employs a donut‐shaped porous solid foam stirrer to enhance mass transfer in multiphase systems. However, the complex structure of the foam stirrer presents significant challenges for developing efficient computational models, impeding reactor optimization and scale‐up. In this work, we developed a novel bubble breakup and coalescence model based on Liao's framework