Surface and bulk investigation of ZSM5 and Al-MCM-41 using synchrotron XPS, XANES, and hexane cracking

Carbon dioxide adsorption on micro-mesoporous composite materials of ZSM-12/MCM-48 type: The role of the contents of zeolite and functionalized amine

“…These photoelectronic lines are symmetric, and the values of the binding energies correspond to the lines of these elements on the compounds formed between them, ie a silicon oxide and aluminosilicate [54][55]. These binding energy values of Si 2p and O 1s in ZSM-12/MCM-48 composites are consistent with those found in the literature for the zeolitic and mesoporous molecular sieves.…”

“…The binding energies of Si 2p and O 1s on the ZSM-12/MCM-48 composites were 103.6 eV and 532.9 eV, respectively [52][53][54][55]. These photoelectronic lines are symmetric, and the values of the binding energies correspond to the lines of these elements on the compounds formed between them, ie a silicon oxide and aluminosilicate [54][55].…”

Characterization of Cr−MCM-41 and Al,Cr−MCM-41 Mesoporous Catalysts for Gas-Phase Oxidative Dehydrogenation of Cyclohexane

“…However, for the most acidic samples, cracking of cyclohexane is also observed above 613 K. As the acidity of the Al-grafted samples increases with the Al content, this process starts already above 593 K in the case of the catalyst with the largest Al loading. Similar behavior was observed for Al−MCM-41 in the decomposition of cumene and hexane …”

Cobalt oxide nanoparticles on mesoporous MCM-41 and Al-MCM-41 by supercritical CO2 deposition

“…10, spectra a and b) is possible due to the lower concentration of Co species and probably, the oxide phase is finely dispersed inside the support structure in agreement with the TEM images. The binding energies of Si 2p and Al 2p core-level spectra for all samples were 103.4 and 74.1 eV, respectively, in agreement with Jalil et al [40].…”