Themed collection Synthesis, modification and tailoring of properties of nanoporous materials

Zhengxing Qin, Xinmei Liu and Zifeng Yan introduce this Inorganic Chemistry Frontiers themed collection on Porous Materials for Future Energy.

Propane dehydrogenation (PDH) is one of the most promising on-purpose technologies to produce propylene. In this review, we present a comprehensive summary of the latest research progress on zeolite-supported metal catalysts for PDH reactions.

The SSZ-39 zeolite is regarded as a promising small-pore zeolite for industrial applications due to its excellent catalytic properties and this review briefly summarizes the recent advances in the synthesis and application of the SSZ-39 zeolite.

The schematic diagram of the water splitting of the as-prepared catalysts.

A NaA zeolite shows exceptionally high selectivity for radioactive ⁹⁰Sr²⁺. Structural Rietveld refinements reveal that all Sr²⁺ ions are located at the center of the s6rs of lta cages.

The CO₂-assisted oxidative dehydrogenation of ethane (ODH-CO₂) attracts a lot of research interest since it combines greenhouse gas utilization with the production of valuable chemicals.

Direct synthesis of delaminated layered zeolitic materials aims to synthesize confined catalysts for reactions involving sterically bulky reactants, which are too large to benefit from conventional three-dimensional confinement in micropores.

Mo dispersion is the key factor promoting the performance of an Mo/ZSM-5 catalyst for the methane dehydroaromatization (MDA) reaction.

Chemical etching after Ar ion beam cross sectioning enables the formation of zeolite internal nano structures to be observed directly using a newly developed highly sensitive scanning electron microscope.

This review article summarizes some of the recent developments in the field of nanoporous materials characterization.

A series of highly dispersed and c-axis-penetrated mesoporous MWW oligolayers with enhanced properties was prepared via an efficient, green, and controllable method through H₂O₂-induced micro-explosion.

According to periodic DFT calculations suggest that: Ge atoms in SCM-14 germanosilicate are clustered forming D4Rs populated entirely by Ge; structures with more Ge–O–Ge bridges are more stable; simulated ¹⁹F NMR chemical shifts do not correlated with Ge content of the D4R.

Schematic illustration of the preparation of Ni/SAPO-11 and the stabilization of metal species by [Bmim][BF₄] and lysine.

The dynamic evolution of Al species in the hydrothermal dealumination process of CHA zeolite was investigated by multiple solid-state NMR methods. Two types of Al–OH species were clearly distinguished by ¹H–¹H DQ-SQ MAS NMR.

A DBT HDS reaction scheme based on different composite catalysts (Ni/Al₂O₃@SOD–Mo/Al₂O₃ and Ni/Al₂O₃–Mo/Al₂O₃) is proposed.

A Design of Experiments approach allowed studying the parameters affecting TS-1 synthesis. Few of them drive the key properties of the TS-1 (synthesis yield, Ti content and speciation), namely hydrolysis time and crystallization time and temperature.

The co-existence of (Pt + Ni) effectively inhibits the formation of low-carbon olefins during the alkylation of toluene with methanol via the dehydrogenation of methanol to carbon oxides and also the hydrogenation of olefins to paraffins.

The multiscale porosity of hierarchical zeolite materials is analyzed through advanced adsorption-based characterization in conjunction with additional techniques including electron tomography.

The usage of complementary characterization techniques enabled closing the understanding gap concerning the location and structure of mesopores in zeolites.

Seed-assisted synthesis of high-silica zeolite Y with good (hydro)thermal stability, abundant strong acid sites and excellent catalytic cracking performance.

Cationic polyacrylamide (CPAM) provides a breeding ground on which the initial (alumino)silicate species attach and accelerate zeolite nucleation and crystallization. A nano-plate-like small-crystal-sized NaY zeolite is synthesized.

Ordered “nest-like” hierarchical ZSM-48 (NSH-ZSM-48) hollow spheres stacked by uniform nanorods with superior accessibility were synthesized utilizing a novel bolaform s-triazine based surfactant, and the proper formation mechanism was proposed.

A graphitized hierarchical porous carbon material supported with a transition metal was prepared by a one-pot method, and it might show potential application in electrochemical conversion.

Aqueous sodium-ion batteries (ASIBs) promise particularly increased operational safety and lower manufacturing cost than the current state-of-the-art organic electrolyte-based lithium-ion batteries.

High quality zeolite A was successfully synthesised from circulating fluidized bed combustion (CFBC) fly ash by alkali fusion and hydrothermal treatment.

Hydrogen selective metal–organic framework membranes with excellent performance are in demand and synthesized here.

Diffusion kinetics of ethene in cage-structured 8-ring zeolites were theoretically studied. Diffusion activation energy and pre-exponential factor correlate with the structure descriptors, i.e., opening size and accessible volume, respectively.

A three-dimensional (3D) metal–organic framework constructed from unprecedented Zn₉O₂(OH)₂(pyz)₁₂ (pyz = pyrazolate) clusters and Ni(salen)-derived linkers was reported.

The nature and transformation of hydroxyl species in a CeY zeolite during the calcination process have been investigated via the information of the hydroxyl spectra of the samples monitored in real-time via in situ FTIR spectroscopy technology.

A highly active NH₃-SCR catalyst (Cu-CHA_USY) derived from CHA-type zeolite (CHA_USY) that is synthesized via template-free interzeolite transformation from ultra-stable Y (USY) with specific silicon and aluminum configurations.

The one-pot Prins–Friedel–Crafts reaction of aldehydes, a homoallylic alcohol and aromatics catalyzed by large-pore zeolites is an attractive environmentally friendly route towards valuable heterocyclic compounds containing a 4-aryltetrahydropyran moiety.

A highly stable Hofmann-based metal−organic framework has been purposely synthesized for efficient C₃H₆/C₃H₈ separation through the linker modification strategy using direct mixing method under ambient conditions.

Multifunctional CuCoS nanoparticles with photothermal converters and dual enzymatic activities have been designed for the synergistic photothermal and chemodynamic therapy of tumors.

Zeolite A with commercial quality and high removal efficiency for Sr²⁺ was hydrothermally synthesized from lithium slag after mild and facile activation.