Dehydrogenation of cyclohexanol on copper-containing catalysts II. The pathways of the cyclohexanol dehydrogenation reaction to cyclohexanone on copper-active sites in oxidation state Cu0 and Cu+

Utilization of cyclohexanol dehydrogenation in a novel thermally coupled reactor for Fischer–Tropsch synthesis in gas to liquid technology

“…The increase of temperature causes the higher production of gasoline and lower amount of produced carbon dioxide. Thus, the higher temperature is favorable in this work but, this point has to be taken in consideration the endothermic side reactions are possible to carry out in a certain range of temperature (Fridman et al, 2004;Itoh, 1987;Jeong et al, 2003). Therefore, the variation of temperature should not exceed from this range.…”

“…The GTL product of exothermic side after heat exchanging with inlet syngas is sent to refinery for hydro cracking and final separation. The characteristics and entry data of different sides of the TCRs are brought in Tables 1e3 (Forghani et al, 2009;Fridman et al, 2004;.…”

Influence of the acid/base and redox properties of catalysts in the gas-phase dehydration–dehydrogenation of cyclohexanol on iron and titania containing mesoporous materials

“…The gas-phase dehydration-dehydrogenation reaction of cyclohexanol is considered as a universal test reaction for acid-base properties of solid catalysts [9] as well as dehydrogenation of cyclohexanol to cyclohexanone is a very important industrial stage in the production of caprolactam [10][11][12][13][14][15][16]. Both the surface acidbase characteristics and redox properties of the catalysts influence dehydrogenation of cyclohexanol.…”

“…Both the surface acidbase characteristics and redox properties of the catalysts influence dehydrogenation of cyclohexanol. The mechanism of gas-phase cyclohexanol dehydration/dehydrogenation is hardly known [9,12,13,16]. It is generally accepted that dehydration to cyclohexene is related to acid sites, whereas dehydrogenation to cyclohexanone is generally associated to basic/redox sites.…”

“…However, some recent investigations indicated that both acid and basic sites were responsible for the dehydration process [9]. A number of investigations have focused on the influence of the support, the method of preparation, and the metal loading on the acid/base and redox properties of the catalysts and on their activity and selectivity in cyclohexanol dehydration/ dehydrogenation [10][11][12][13][14][15][16]. Incorporation of iron and titanium in the mesoporous support is a possible way to modify the acidity and redox properties of the host structure.…”