Catalytic dehydrogenation of formic acid over palladium nanoparticles immobilized on fibrous mesoporous silica KCC-1

The enhanced role of surface amination on the catalytic performance of polyacrylonitrile supported palladium nanoparticles in hydrogen generation from formic acid

“…No CO signal could be detected by GC analysis (Figure S1), and the volume of the gas product was reduced to half after capturing CO 2 by NaOH solution trap (10 mol/L) indicating the excellent selectivity of the catalyst for FA dehydrogenation. 8,10 Clearly, increasing the reaction temperature could result in the increase of hydrogen generation rate. The corresponding activation energies for FA dehydrogenation over Pd/PAN and Pd/EDA-PAN are 38.0 and 40.5 kJ/mol, respectively, which are comparable with the most active supported Pd-based catalysts ever reported.…”

“…5 Recent research progresses demonstrated that the catalytic properties of the Pd-base catalysts depend largely on the surface properties of supports, which can influence the dispersion states, stability, and the electronic properties of Pd NPs through building interaction between Pd NPs and supports. [6][7][8][9][10][11][12] For instance, Hattori et al used titanium dioxide as the catalyst support, and found that the electron transfer between titanium dioxide and Pd may change the electronic density of the active metals, and then promote the catalytic activity for the hydrogen production by FA. 7 In addition, it was reported that the catalytic properties of the supported Pd-base catalyst may be considerably enhanced after introducing some basic groups (like amino groups) into the solid supports.…”

“…9 Similarly, modification of the mesoporous silica and porous carbon materials with amino-containing compounds like (3-aminopropyl) trimethoxysilane may also generate more active supported Pd (including bimetallic Pd-based nanoparticles) catalysts. [10][11][12] However, some drawbacks are present in these post-synthetic strategies: the distribution of the organic amino groups on the solid support materials is usually not very uniform, and the loading of the large organic functionalities is often low, which may finally bring difficulty in getting ultra-small and stable Pd NPs. In addition, the use of relatively expensive mesoporous materials and amination agents is unfavorable for developing practical catalysts.…”

Delivery of Natural Agents by Means of Mesoporous Silica Nanospheres as a Promising Anticancer Strategy

“…For example, Bayal et al [60] showed that changing the concentrations of urea, surfactant (CTAB instead of CPB), or solvent (1-pentanol), the reaction time, or temperature can result in various particle sizes, fiber densities, surface areas, and pore volumes for KCC-1. Such easy manipulation and controlled synthesis of this material make KCC-1 a good solution for versatile applications in the environment, energy, biology, medicine, and other fields [42,43,[61][62][63][64][65][66][67][68]. KCC-1 could be recommended for different small or large drug/therapeutic agents, possibly for any design and pathological disorder due to KCC-1 s unique physicochemical features.…”

Nanopore‐Supported Metal Nanocatalysts for Efficient Hydrogen Generation from Liquid‐Phase Chemical Hydrogen Storage Materials

“…Notably, the TOF value of primary amine-functionalized Pd@ SBA-15 catalyst showed about two-and fivefold improvement than that of secondary amine-functionalized Pd@SBA-15 and tertiary-functionalized Pd@SBA-15, respectively, due to the electronic and steric effects between amine groups and Pd NPs as well as the changes of hydrophilicity/hydrophobicity of SBA-15. Besides the SBA-15, other types of mesoporous silica, such as KIE-6, [71,73,74] KIE-11, [75] MCM-41, [72] and KCC-1, [85] and periodic mesoporous organosilica [76] were also used as supports to anchor metal NPs for the FA dehydrogenation.…”