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The story revolves around Bauua Singh (Shah Rukh Khan), a vertically challenged man, who is full of charm and wit, with a pinch of arrogance. The wettability improved significantly with the increase in Ti content or with the increase in temperature as a result of the interfacial phenomena. Provided correct acknowledgement is given. With Shah Rukh Khan, Anushka Sharma, Katrina Kaif, Mohd. The isothermal wetting and spreading behaviors of SnTi/ZrO2 systems were investigated by the sessile drop method, and the interfacial microstructures were characterized by XRD and TEM. If you are an author contributing to an RSC publication, you do not need to request permission Please go to the Copyright Clearance Center request page. To request permission to reproduce material from this article in a commercial publication, Provided that the correct acknowledgement is given and it is not used for commercial purposes. This article in other publications, without requesting further permission from the RSC, Grunwaldt,Ĭreative Commons Attribution-NonCommercial 3.0 Unported Licence. Supported gold- and silver-based catalysts for the selective aerobic oxidation of 5-(hydroxymethyl)furfural to 2,5-furandicarboxylic acid and 5-hydroxymethyl-2-furancarboxylic acid In the Al 2 O 3 /ZrO 2 multilayer structure, the Al 2 O 3 layer was kept constant at 5 nm, while the ZrO 2 layer thickness varied from 5 to 20 nm (5/5, 5/10, 5/15 and 5/20 nm) with a total of 40 bilayers. The observed differences in catalyst selectivities can be taken as a starting point for further mechanistic investigation on the oxidation of HMF, contributing to a fundamental understanding of this reaction which is particularly important for establishing the production of bio-based polymers. By variation of the reaction parameters, the Au/ZrO 2 catalyst could be tuned to produce also HFCA, whereas the Ag/ZrO 2 catalyst exclusively produced HFCA in a wide range of reaction parameters. While FDCA was mainly formed in the presence of gold catalysts at a maximum productivity of 67 mol FDCA h −1 mol Au −1, silver catalysts showed a remarkably high activity in aldehyde oxidation producing HFCA in almost quantitative yields with a maximum productivity of 400 mol HFCA h −1 mol Ag −1. High yields and selectivities for the production of FDCA (89%) and HFCA (≥98%) were achieved under the optimized reaction conditions with Au/ZrO 2 and Ag/ZrO 2 catalysts, respectively. Among the investigated catalysts, ZnZrO-5 demonstrates the highest dehydrogenation activity and stability, achieving an isobutane conversion of 32.5% with an isobutene selectivity of 94.6% after 7 h time-on-stream.The sustainable synthesis of two important intermediates relevant for the production of bio-based polymers, 2,5-furandicarboxylic acid (FDCA) and 5-hydroxymethyl-2-furancarboxylic acid (HFCA), via oxidation of 5-(hydroxymethyl)furfural (HMF) was investigated using supported gold- and silver-based catalysts in water with air as the oxidant. In addition, the possible reaction pathways and formation of the above active sites were discussed in detail. XRD, XPS and EPR characterization and activity test results confirmed that coordinatively unsaturated Zr 4+ ions (Zr cus 4+) near oxygen vacancies ( V ˙˙ O) act as active sites for isobutane dehydrogenation. CO 2/NH 3-TPD and Py-IR analyses showed that the incorporation of Zn partially neutralizes inherent strong Lewis acid–base pairs and reduces the surface acidity of ZrO 2. The detection results of a range of instrumental analysis techniques revealed that all ZnZrO- x samples comprise nanosized aggregates. Herein, the synthesis of unconventional binary doped oxide heterogeneous catalysts (ZnZrO- x) was described and their respective isobutane dehydrogenation performances were evaluated. Moreover, doping of metal oxides can modify their intrinsic properties. 1b, in Ni(OH) 2, the Ni2p orbitals show two fitting peaks and two satellite peaks at 855.5, 861.3, 873.6 and 879.7 eV, which are characteristic spin-orbit peaks of Ni 2+ (Hou et al., 2018, Zhai et al., 2020). A number of excellent reviews have reported that the surface acid–base properties of catalysts play an important role in the dehydrogenation of light alkanes. To study further the composition of the catalyst and the interaction between Ni(OH) 2 and ZrO 2 in the heterostructure Ni(OH) 2 /ZrO 2, we performed XPS analysis, as shown in Fig.