Precursors of the copper-zinc oxide methanol synthesis catalysts

Thermal Decomposition Studies of Layered Metal Hydroxynitrates (Metal: Cu, Zn, Cu/Co, and Zn/Co)

“…Layered metal hydroxysalts (LHS) are used in dye adsorption, catalysts in organic reactions such as catalyst supports, fire retardants, polymer composites, electrodes, magnetism, electrochromic devices, and photocatalysts [1][2][3][4][5]. The structure of layered metal hydroxysalt is comprised of a hydroxyl deficient positively charged compound and the composition [M(OH) 1−x ] x+ where M denotes metal ion; = 0 to 1 [6].…”

“…We had reported on the structural transformations during thermal decomposition of nickel hydroxide to nickel oxide, depending on the conditions of synthesis and crystallinity [24,25]. Metal oxides have been extensively investigated in the last two decades in view of their application as magnetic materials, electrochromic devices, gas sensors, high-temperature solar selective absorbers, and catalysts [1,[26][27][28][29]. The information about the decomposition studies of layered metal hydroxysalt is important to prepare high surface area solid for adsorption, catalytic supports, and catalysts.…”

Hydrogenation of CO2to Methanol at Atmospheric Pressure over Cu/ZnO Catalysts: Influence of the Calcination, Reduction, and Metal Loading

“…Influence of the metal loading. The XRD patterns for the four samples with different Cu loadings (5,10,20, and 40 wt %) are shown in Figure 7. The intensity of the copper peaks increased with the metal loading, as expected, but other differences were not observed.…”

“…[4][5][6]12,24,39 In addition, the catalytic behavior of the different surfaces, e.g., Cu(111), Cu(100), and Cu(110), 16,17,21 the surface structural changes during the methanol synthesis, 18,19 the influence of the oxygen vacancies, 15 the presence of lattice defects 40 and the different precursor structures have also been studied. 9,10,41 Based on all of the variables mentioned above, some authors have studied the different pathways for the CO and CH 3 OH reactions (eqs 1 and 2) along with the different intermediate species formed and how they influence the methanol synthesis. 3,8,15,20,22,42 models of the kinetics for methanol synthesis and deactivation have also been developed.…”

Correlation of Defect‐Related Optoelectronic Properties in Zn5(OH)6(CO3)2/ZnO Nanostructures with Their Quasi‐Fractal Dimensionality

“…In particular, this technique was shown to be effective for producing nanoporous nanoscale ZnO useful in potential solar cells [3], as well as photocatalytic and gas sensing applications [15,16,18,19]. By itself, hydrozincite, a naturally occurring basic zinc carbonate, has been researched, mostly in geology-related studies, as well as a catalyst component [20,21]. Nanoscale forms of hydrozincite have been known and studied not only as precursors for generating a nanoscale ZnO, but also as, for example, a product of naturally occurring biologically controlled mineralization [22].…”