Synthesis research of nanosized ZSM-5 zeolites in the absence of organic template

Synthesis and characterization of nano-ZSM-5 zeolite and its application for electrocatalytic oxidation of formaldehyde over modified carbon paste electrode with ion exchanged synthesized zeolite in alkaline media

“…The XRD pattern of the synthesized nano-ZSM-5 is illustrated in Fig. 2 with comparisons of main peaks at 2h = 7.9, 8.9, 23.2 and 24.5 with the reference sample [15][16][17][18], the crystallization of almost pure ZSM-5 phase will be ascertained. The SEM image of crystalline phase is a useful approach that one can determine the size and morphology of the obtained crystals.…”

“…By reducing the particle size, the diffusion path lengths will decrease and active sites will be accessible readily [7][8][9][10][11][12][13]. Among all zeolite types, ZSM-5 is important both from industrial and academic point of view due to its unique shape selectivity property, acidity, thermal stability and application in petro-chemical industry, oil refinery and environmental catalysis [14][15][16][17]. The current study intends to introduce a novel zeolite modified carbon paste electrode based on Ni modified template free synthesized nano ZSM-5 crystallites for the electrocatalytic oxidation of formaldehyde.…”

Effect of Supported Transition Metal Catalysts in NO Removal Reaction

“…Weak Bands in 3750 to 3900 cm -1 related to the end silanol has appeared in all of synthetic catalysts. Absorption bands in 2020 cm -1 in all IR spectrum are resulted from H-Si vibration or silicon impurities in the zeolite's structure [26][27][28] . It is expected that polyvanadate stretching vibration in 870 cm -1 and characteristic vibration of V 2 O 5 in 452, 475, 526, 696 and 996 cm -1 appear but none of them were found in the range of the catalyst.…”

Preparação e Caracterização de Compósitos Poliméricos Baseados em Amido Termoplástico e Materiais de Alta Área Superficial: Zeólita ZSM-5 e Sílica Coloidal

“…Cabe destacar que o processo foi otimizado para obtenção da fase em menores tempos do que as condições propostas na literatura [14,15] . Estudos preliminares comprovam que temperaturas muito baixas influenciam o processo de nucleação de formação do cristal [22] , porém, mesmo assim, é possível a obtenção da fase zeolítica a 70 °C, por exemplo [15] . Porém, o tempo de síntese passa a ser muito longo, chegando a passar dos 15 dias de tratamento hidrotérmico [15,[23][24][25] .…”