The gas absorption process for CO2 separation from streams is of high interest in various applications chemical, oil, and industries, as well environmental protection. choice a certain amine (single or blended amine) capture mainly based on the capacity, reaction kinetics, regenerative potential facility. application sterically hindered amines gas-treating technology offers rate, degradation resistance advantages over conventional removal gases. aim this review to bring an update different...

A high-temperature regenerable CO2 absorbent, Zr-stabilized CaO, was prepared using the surfactant template-ultrasound synthesis method in this work. During 15 absorption/desorption cycles, it found that CaO with a Zr/Ca molar ratio of 0.303 kept most favorable stability and uptake capacity among proposed samples. multiple carbonation/decarbonation incorporation zirconium inhibited agglomeration sintering particles, thereby improving absorbent durability. The effects carbonation temperature...

Carbon capture is an emerging technology that often mentioned as a potential solution to the global warming crisis. However, most of captured carbon now treated waste, discarded, and not used in any meaningful way. On other hand, from sustainable development point view, CO2 valorization could be very appealing approach offers economic when this compound recycled into valuable chemical products. In regard, state-of-the-art review encompasses wide range different processes achieve conversion...

In this work, new solubility data of CO2 in aqueous piperazine (Pz) solutions were measured over a temperature range from T = (287.1 to 313.1) K and for amine concentrations m (0.10 2.00) mol·kg−1. The partial pressure was kept within PCO2 (0.11 525.17) kPa using vapor−liquid equilibrium (VLE) apparatus based on static-synthetic method. These experimental those found the literature ternary system Pz−CO2−H2O correlated model combining virial equation state calculate fugacity coefficients with...

Sorption‐enhanced glycerol reforming, an integrated process involving catalytic steam reforming and in situ CO 2 removal, offers a promising alternative for single‐stage hydrogen production with high purity, reducing the abundant by‐product streams. This work investigates this fixed‐bed reactor, via two‐scale, nonisothermal, unsteady‐state model, highlighting effect of key operating parameters on performance. adsorption kinetics was investigated experimentally described by mathematical...

This work investigates the acidification of a natural limestone source using citric acid in order to produce porous calcium oxide (CaO) CO2 sorbent, with good stability high-temperature operation. The sorption behavior proposed material was studied several adsorption–regeneration cycles under different adsorption conditions (600, 650, and 700 °C), indicating superior thermal capacity compared untreated limestone. Acidification results production citrate component, which easily decomposes...

The present work investigates the sustainable production of high-purity hydrogen through sorption enhanced steam reforming glycerol (SESRG) over Ca9Al6O18–CaO/xNiO (x = 15, 20, and 25 wt %) Ca9Al6O18–CaO/20NiO–yCeO2 (y 5, 10, 15 bifunctional catalyst-sorbent materials. A wet mixing method involving limestone acidification coupled with two-step calcination was employed to prepare Cyclic carbonation/calcination tests revealed that materials promoted 10 % CeO2 possessed an excellent CaO...

Challenges and opportunities in photocatalytic glycerol valorization to hydrogen value-added liquid products: process analysis parametric study.

Glycerol is a significant byproduct of biomass conversion into biodiesel, and numerous studies have been focused on its valorization technologies in recent years. Photocatalytic glycerol promising technology to convert solar energy chemical by producing hydrogen value-added liquid products. This desirable from the point view both green chemistry sustainable development since it can operate at ambient temperature atmospheric pressure using renewable energy. The key element for successful...