Steam-promoted Methane-CO2 reforming by NiPdCeOx@SiO2 nanoparticle clusters for syngas production

Efficient Calcium Looping-Integrated Methane Dry Reforming by Dual Functional Aerosol Ca–Ni–Ce Nanoparticle Clusters

“…The aerosolized droplets are then delivered to a diffusion drying unit consisting of a preheating chamber and a silica-filled diffusion dryer. Here, the soluble precursors were dried and crystallized to form dried precursor particles via gas-phase EISA. ,, In the following stage (i.e., first thermal treatment), dried precursor particles are delivered to a quartz-made flow reactor for calcination at 550 °C, forming nanoparticles (NPs) of mixed oxides (CaO–NiO–CeO 2 ) with a homogeneous elemental distribution. After reduction under 0.25 L/min of H 2 flow at 700 °C (i.e., second-stage thermal treatment), NiO was selectively converted to Ni, while CaO and CeO 2 remained in oxide states.…”

Aerosol-Assisted Synthesis of Metal–Organic Framework-Derived Hybrid Nanomaterials for Reverse Water–Gas Shift Reaction

“…Figure b shows the CO 2 -TPD profiles of Cu@CeO 2 samples, which consisted of three types of desorption peaks mainly correlated to the basic sites of CeO 2 nanoparticle clusters. The α peaks (82–126 °C) were assigned to the CO 2 desorption from the sites with a low binding affinity between the catalysts and CO 2 (i.e., weak basicity). ,,,, The β peaks (299–331 °C) were assigned to the pairs of Ce–O and/or Cu–O having moderate basicity. ,, The γ peaks (611–807 °C) were strong basic sites correlated to unsaturated O 2‑ anions. ,,, The number of basic sites and the temperatures of desorption peaks of the Cu@CeO 2 samples are summarized in Section S9 of Supporting Information. By decreasing R Cu , the total basic sites were shown to increase, attributable to the increase of available surface area from CeO 2 nanoparticle clusters in the hybrid nanostructure (i.e., as evident by the increase of S BET of the catalysts shown in Table ).…”

“…CO 2 hydrogenation to methanol is a promising route as methanol is one of the most valuable products derived from CO 2 in the C1 category. ,,− Heterogeneous catalysis, provides a more flexible route for CO 2 utilization under a lower reaction temperature. − However, the equilibrium conversion for the direct conversion of CO 2 to methanol is too low to expand the potential in future applications. Therefore, developing a suitable strategy to improve the conversion of CO 2 to methanol is of crucial importance.…”

“…The α peaks (82−126 °C) were assigned to the CO 2 desorption from the sites with a low binding affinity between the catalysts and CO 2 (i.e., weak basicity). 13,16,24,52,53 The β peaks (299−331 °C) were assigned to the pairs of Ce−O and/ or Cu−O having moderate basicity. 13,52,53 The γ peaks (611− 807 °C) were strong basic sites correlated to unsaturated O 2anions.…”

“…13,52,53 The γ peaks (611− 807 °C) were strong basic sites correlated to unsaturated O 2anions. 13,16,24,52 The number of basic sites and the temperatures of desorption peaks of the Cu@CeO 2 samples are summarized in Section S9 of Supporting Information. By decreasing R Cu , the total basic sites were shown to increase, attributable to the increase of available surface area from CeO 2 nanoparticle clusters in the hybrid nanostructure (i.e., as evident by the increase of S BET of the catalysts shown in Table 2).…”