The process of sorption enhanced steam methane reforming (SE-SMR) is an emerging technology for the production of low carbon hydrogen. The development of a suitable catalytic material, as well as a CO2 adsorbent with high capture capacity, has slowed the upscaling of this process to date. In this study, to aid the development of a combined sorbent catalyst material (CSCM) for SE-SMR, a novel approach

Bubble behavior has a significant effect on the gas–liquid mass transfer in bubbly flows. In this study, the bubble rising velocity and bubble shape in ultrapure water and surfactant solutions are experimentally measured by high–speed photography. The bubble velocity decreases and the bubble shape tends to be spherical due to the presence of the surfactant. As the bubble diameter increases, the rising

TRIS [tris(hydroxymethyl)aminomethane] is proposed as a new buffer with the advantages of being nontoxic and having only one conjugated acid. Moreover, it is well-established in biochemical applications, has good solubility in water (550 g/L), and is reasonably priced. Comparable micromixing experiments in a TRIS buffer and a borate buffer led to similar segregation indices with respective micromixing

Nearly 95% of the energy in the stirred reactor maintains the symmetrical flow field structure formed by fluid rotation, which reduces the efficiency of fluid transfer. In this paper, a dual-shaft eccentric impeller based on the Rushton turbine (RT) and pitched blade Rushton turbine (PBRT) was proposed to eliminate the stable symmetrical flow field structure in the mixing tank and improve the fluid

This work involves the study of the fluid dynamic and mass transfer behaviors of a gassed oscillatory baffled column (OBC) using a coupled computational fluid dynamics (CFD)–population balance model (PBM). First, the liquid flow behavior and power dissipation rate of the OBC were studied. The CFD model result of averaged liquid velocity in the OBC was validated with the literature experimental data

In this study, an attempt has been made to characterize the pattern of entrained air filament inside a liquid bath of high viscosity by employing a fully submerged horizontal rotating solid roller where the lighter phase is allowed to flow uniformly above the bath. The influence of roller rotational speed (ω), depth of submergence (h/D), strength of the crossflow (Reflow), and fluid pair (Mo) on the

Bulk Ni-based catalysts derived from hydrotalcite-type (HT) compounds show enhanced stability in the hydrogenation of CO2 into CH4, in comparison to their supported counterparts. The composition of the parent hydrotalcite determines the Ni loading and particle size, as well as the basicity of the catalysts. In this work, a comparison between the effect of Fe and La on the performance of NiMgAl HT compounds

Levulinic acid is an interesting building block for biofuel (additives) and biobased chemicals. It is accessible by an acid-catalyzed reaction of a wide variety of carbohydrates. We here report a kinetic study on the conversion of d-galactose to levulinic acid in aqueous solutions with sulfuric acid as the catalyst. The experiments were carried out in a broad range of temperatures (140–200 °C), initial

Modern chemical process plants are typically very complex in nature due to the various material and energy recycling streams, including the implementation of process intensification in order to improve the sustainability factor. Looking at each individual unit operation, there are inherent nonlinear properties that may often involve physical and chemical phenomena occurring on different time scales

A human framework needs a careful monitoring of drug concentration which imparts unfavorable condition to human health. Among the various antibiotics, sulfamethoxazole (SMX) has been determined to be a typical antibiotic that is used to treat urinary tract infections, toxoplasmosis, pneumonia, and skin and soft tissue infections. Herein, we report an electrochemical sensing platform using graphene

Austenitic 316L stainless steel is usually used as the structural material in spent fuel reprocessing facilities. However, the contamination of fission products from spent fuel (especially Cs and Sr) on the surface of facilities will greatly affect its safe decommissioning. In this study, for the first time, with the combination of characterizations of electrochemistry and laser-induced breakdown spectroscopy

Multicomponent absorption measurements are notoriously difficult both experimentally and analytically, which is why the literature is lacking information, even though the results are important for understanding real separation systems. In the case of designing a separation process for hydrofluorocarbon (HFC) refrigerant mixtures using an ionic liquid (IL), it is important to understand multicomponent

The recovery of iodide ion (I–) from aqueous solutions is of great significance to economic development. Photoassisted electrochemically switched ion exchange (P-ESIX) takes advantage of the photo/electron bioactivity of EIXMs, which has been used for the recovery of bromide ion (Br–) to increase the adsorption capacity of Br–. To further expand the application of P-ESIX, we used iodide-vacancy bismuth

Fast charging/discharging capabilities are highly desirable for Li-ion batteries (LIBs). LiFePO4 as a low-cost material is widely used in LIBs. However, the poor electronic and ionic conductivity hinder its rate performance. Herein, a continuous ozone-oxidation strategy is successfully used to prepare amorphous mesoporous nano-FePO4 (O3-FP), which is then used to synthesize high-performance nano-LiFePO4/C

Metal dispersion and the stability of metal-based catalysts are critical for improving the catalytic performance of a reforming reaction to produce aromatics. In this work, with the aid of Na+, well-dispersed and highly stable Pt nanoparticles encapsulated in silicalite-1(Sil-1) zeolite to form Pt@Sil-1-xNa catalysts with different amounts of Na+ were prepared with a simple one-pot hydrothermal method

The NIST REFPROP software program is a powerful tool for calculating thermophysical properties of industrially important fluids, and this manuscript describes the models implemented in, and features of, this software. REFPROP implements the most accurate models available for selected pure fluids and their mixtures that are valid over the entire fluid range including gas, liquid, and supercritical states

This article is part of the Machine Learning and Data Science in Chemical Engineering special issue. Chemical engineering is a data-rich subject. Practitioners collect and analyze data for understanding flow patterns, developing empirical models, designing and optimizing chemical reactions, as well as monitoring and controlling chemical processes and systems. Because of the high data dependence, it

The growing demand for smart polymeric transducers such as dielectric elastomer actuators and energy harvesters has urged the use of sustainable and recyclable elastomeric materials. Vitrimer chemistry has shed light on future reprocessable and recyclable thermosets and elastomers. In this work, epoxidized natural rubber (ENR) vitrimers were prepared using diacid or triacid cross-linkers and formed

Figure 1. Recent plasma catalysis contributions characterize and model plasmas and catalytic materials and explore applications to chemistries difficult to promote thermally: (a) plasma characterization, (b) surface plasma/catalyst characterization, (c) plasma-assisted synthesis and modification of catalysts, (d) carbon and nitrogen chemistry, and (e) theory and modeling. [Panel (a) has been reprinted