Mesoporous tin oxide-supported phosphomolybdic acid as high performance acid catalysts for the synthesis of hydroquinone diacetate

Palladium supported on mixed-metal–organic framework (Co–Mn-MOF-74) for efficient catalytic oxidation of CO

“…Fig.3displays the nitrogen adsorption isotherms of mixed CoMn-MOFs samples, along with that of pure Co-MOF-74 and Mn-MOF-74 samples. The adsorption and desorption curves display a typical type-II isotherms according to IUPAC48,51,52 classication with a H3 type hysteresis loop, which is characteristic of the presence of a large proportion of meso and macro porous materials. The specic BET surface areas (S BET ) of the assynthesized MOFs were shown in Table1.…”

The role of PMA in enhancing the surface acidity and catalytic activity of a bimetallic Cr–Mg-MOF and its applications for synthesis of coumarin and dihydropyrimidinone derivatives

“…The reduction in catalytic activity might be claried on the basis of the fact that the increases in the ethyl acetoacetate content hinder the reaction by blocking the active sites on the catalyst surface. 51,53,54 3.6.2.2 Effect of reaction time, reaction temperature and catalyst weight. Effect of the reaction time and temperature on the yield percentage of 3,4-dihydropyrimidinone were studied at 100 C and a molar ratio 1 : 1.5 : 1 (benzaldehyde : urea : ethyl acetoacetate) using 0.05 g of 75% PMA/Cr-Mg-MOF.…”

Role of NiO Nanoparticles in Enhancing Structure Properties of TiO2 and Its Applications in Photodegradation and Hydrogen Evolution

“…The X-ray diffraction (XRD) pattern of the prepared samples was examined using a PW 150 (Philips) instrument with Cu Kα radiation. The crystallite size was calculated from the Debye–Scherrer formula . Transmission electron microscopy (TEM) (JEOL JEM-2100) and scanning electron microscopy (SEM) (JEOL JSM-6510LV) were used to examine the surface morphology of the prepared photocatalysts.…”

“…There are numerous reports which used organic and inorganic salts in the sol–gel approach for preparation of metal oxides. − However, the particles were agglomerated in these approaches, which hinder the wide applications. , It is highly required to develop a surfactant-mediated synthesis method to overcome this drawback. A number of polymeric surfactants have been used in the sol–gel method. − …”