Facile preparation of hierarchically porous diatomite/MFI-type zeolite composites and their performance of benzene adsorption: The effects of NaOH etching pretreatment

A hierarchically porous diatomite/silicalite-1 composite for benzene adsorption/desorption fabricated via a facile pre-modification in situ synthesis route

“…The overlapping fitted breakthrough curves of the composite presented good reproducibility over 4 cycles of benzene adsorption (Fig. 9), and the recycling efficiency of the composite for benzene adsorption remained relatively steady, exceeding 90% according to the integral of the curves from the baseline [31,54]. The diffusion and mass transfer properties of the M-Dt/Sil-1 nano composite did not change significantly, as indicated by the slightly increased diffusion rate constants and constant s values, thus demonstrating the promising industrial application prospects of the novel synthesized diatomite/silicalite-1 composite.…”

“…Diatomite is considered a good candidate for the preparation of hierarchically porous composites [24][25][26][27][28][29][30][31] because it occurs naturally and has a well-developed porosity. Diatomite, also known as diatomaceous earth or kieselgur, is a fossil assemblage of diatom shells composed of amorphous hydrated silica (SiO 2 ÁnH 2 O) and is classified as opal-A in mineralogy.…”

In situ hydrothermal synthesis of a novel hierarchically porous TS-1/modified-diatomite composite for methylene blue (MB) removal by the synergistic effect of adsorption and photocatalysis

“…Diatomite is a potential candidate for the preparation of hierarchically porous composites [20,[31][32][33][34][35][36][37] because it occurs naturally with well-developed porosity. Diatomite, which is also known as diatomaceous earth or kieselgur, is a fossil assemblage of diatom shells consisting of amorphous hydrated silica (SiO 2 ÁnH 2 O) and classified as opal-A in mineralogy.…”

Enhancement of diatomite solid acidity by Al incorporation, as evaluated by the catalytic effects on the thermal decomposition of 12-aminolauric acid

“…Diatomite is primarily composed of amorphous hydrated silica (SiO 2 ·nH 2 O), which is categorized as non-crystalline opal-A, according to the mineralogical classification [3][4][5]. Because diatomite has macroporous structures with pore sizes that range from the nanometric to the micrometric domains [2,6], it has been widely used as adsorbents [7][8][9][10][11], supports [12][13][14][15][16][17][18], and templates of macroporous materials [2,6] [19][20][21][22].…”