zeolite – TechConnect Briefs

Examination of the osteoconductive, antibiofilm & biomechanical properties of a PEEK-ZEOLITE composite biomaterial for intervertebral spine fusion surgery

Sankar S., Johns D.W., Crudden J.J., Difusion Technology Inc., US

Introduction: Polyether ether ketone (PEEK), a common spine biomaterial demonstrates intrinsic inertness and hydrophobic properties, thereby resulting in an inherent susceptibility to bacterial infections and reduced fusion capacity within the intervertebral space due to fibrous [...]

Formation and stabilization of gold and silver clusters and nanoparticles in mordenites

Pestryakov A., Bogdanchikova N., Tuzovskaya I., Avalos M., Farías M.H., Tomsk Polytechnic University, RU

Supporting silver and gold on mordenites by ion-exchange method with further reduction with H2 leads to formation of neutral and charged metal clusters inside zeolite channels as well as metal nanoparticles on external surface of [...]

Molecular Simulation Studies for the Synthesis of Ni Nanowires in Zeolite Cancrinite

Huertas-Miranda J.A., Quiñones-Fontalvo L., Martínez-Iñesta M.M., University of Puerto Rico, US

Evaluation of the spatial distribution of Ni metal atoms inside CAN was done at two Si/ Al ratios and four Ni loadings. Using Sorption from Material Studio 4.0 (Accelrys, Inc.), Metropolis Monte Carlo simulations under [...]

A Mechanistic Investigation on 1,5- to 2,6-Dimethylnaphthalene Isomerization Catalyzed by Acidic Beta Zeolite: An ONIOM Study with a Newly Developed Density Functional Theory

Kumsapaya C., Bobuatong K., Choomwattana S., Khongpracha P., Tantirungrotechai Y., Limtrakul J., Kasetsart University, TH

2,6-Dimethylnaphthalene (DMN) is the key intermediate in the synthesis of poly (ethylene naphthalate) (PEN), a high-performance polymeric material. The processes to produce 2,6-DMN have been the focus of numerous experimental investigations, yet there is no [...]

In-situ incorporation of Pd-MPTES complex in nanostructured silica

García Martínez J., Carrillo A.I., Linares N., University of Alicante, ES

Recently, we described a simple method to incorporate metal nanopaticles in porous materials by functionalization of nanoparticles with trialkoxysilanes. This strategy is based on three steps: first, the metal nanoparticles were produced by controlled reduction [...]

Silylation Hardening for Mesoporous Silica Zeolite Film

Kikkawa T., Hiroshima University, JP

Pure silica zeolite films were prepared for ultra-low-k interlayer dielectrics in ultra-large integrated circuits by both hydrothermal crystallization using tertabuthylammonium hydroxide, tetraethylorthosilicate and ethylalcohol, and vapor phase transport synthesis using ethylene diamine and triethylamine. Self-assembled [...]

Adsorption of glycine and phenylalanine in H-ZSM-5 zeolite: an embedded QM/MM study

Boekfa B., Sirijaraensre J., Limtrakul J., Limtrakul P., Pantu P., Limtrakul J., Limtrakul P., Kasetsart University, TH

Zeolites are crystalline aluminosilicate microporous materials whose pore diameters are in the range of 2 to 10 Å. Zeolites have numerous important applications in catalysis, adsorption, drug delivery, and chemical separations. Recently, zeolites have received [...]

Zeolite Membrane Microreactors for Fine Chemical Synthesis

Zhang X., Lai S.M., Lam K.F., Yeung K.L., Martin-Aranda R., Hong Kong University of Science and Technology, CN

The performance of a membrane microreactor was tested and compared with that of microreactor, packed bed reactor (PBR) and packed bed membrane reactor (PBMR) for the Knoevenagel condensation reaction of benzaldehyde and ethyl cyanoacetate to [...]