Hydrothermal conversion of rice husk ash to faujasite-types and NaA-type of zeolites

Yusof, Aminah Md; Malek, Nik Ahmad Nizam Nik; Rashid, Noor Aini Abd

doi:10.1007/s10934-009-9262-y

Cited by 82 publications

(38 citation statements)

References 16 publications

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“…The procedure for the synthesis of zeolite Y and the structure identification are described elsewhere [16]. Naturally occurring mordenite was obtained from a large deposit in Tasik Malaya, Indonesia.…”

Section: Materials and Chemicalsmentioning

confidence: 99%

Kinetic and equilibrium studies of the removal of ammonium ions from aqueous solution by rice husk ash-synthesized zeolite Y and powdered and granulated forms of mordenite

Yusof

Keat

Ibrahim

et al. 2010

Journal of Hazardous Materials

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129

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Section: Materials and Chemicalsmentioning

confidence: 99%

Kinetic and equilibrium studies of the removal of ammonium ions from aqueous solution by rice husk ash-synthesized zeolite Y and powdered and granulated forms of mordenite

Yusof

Keat

Ibrahim

et al. 2010

Journal of Hazardous Materials

Self Cite

129

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“…Also as the alkali metals that naturally occur in ash in many biomass species and some wastes are known to have a catalytic effect we have used rice husk ash as one of the catalysts in the pyrolysis experiments. Rice husk ash is known to comprise of 90-97% silica, and has been used as a catalyst support and good synthesis precursor for zeolites catalysts [38][39][40].…”

Section: Introductionmentioning

confidence: 99%

Catalytic pyrolysis of rice husk for bio-oil production

Bakar

Titiloye

2013

Journal of Analytical and Applied Pyrolysis

237

104

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Catalytic pyrolysis experiments have been carried out on Brunei Rice Husk (BRH) to obtain bio-oil using a fixed-bed pyrolysis rig. ZSM-5, Al-MCM-41, Al-MSU-F and Brunei rice husk ash (BRHA) were used as the catalysts for the catalytic pyrolysis experiments and comparison was done to analyse the changes in the bio-oil properties and yield. Properties of the liquid catalytic and non-catalytic bio-oil were analysed in terms of water content, pH, acid number, viscosity, density and calorific value. The bio-oil chemical composition shows that ZSM-5 increases the production of aromatic hydrocarbons and light phenols, whilst Al-MCM-41 reduces the acetic acid production. The catalytic runs increased the calorific value and water content in the bio-oil, whilst viscosity, density and acid number is decreased.

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“…Zeolite beta was also obtained from rice husk ash . Faujasite and NaA‐type zeolites have been prepared by Yusof et al . Preparation of ZSM‐5 from RHA has also been reported in the literature .…”

Section: Introductionmentioning

confidence: 94%

A Facile Hydrothermal Conversion of Rice Husk Ash to ZSM‐5 Zeolite Powders

2011

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The ZSM‐5 zeolite powders were prepared through in situ extraction (extraction and conversion in single step process) of silica from rice husk ash in the presence of other aqueous‐based precursors (sodium aluminate and tetrapropyl ammonium hydroxide) following a simple hydrothermal condition at 130°C–170°C. The powders were characterized by X‐ray diffraction (XRD), thermogravimetry analysis (TGA), differential thermal analysis (DTA), Fourier transform infrared (FTIR) spectroscopy, N2 physisorption measurements, and field emission scanning electron microscopy (FESEM). Crystallizations of ZSM‐5 were noticed at 130°C/96 h, 150°C/24 h, and 170°C/12 h. The exothermic peak at 422°C in DTA curve indicated the removal of tetrapropyl ammonium ions (TPA+) used as structure directing agent (SDA). The vibration bands at around 550 and 1221 cm−1 indicated the presence of double 5‐ring in ZSM‐5. The 150°C–170°C‐treated samples exhibited higher BET surface area and pore volume compared to those of 130°C‐treated powders. The FESEM images showed coffin‐shaped morphology of the powders, and their sizes increased with increase in both reaction temperature and time.

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Hydrothermal conversion of rice husk ash to faujasite-types and NaA-type of zeolites

Cited by 82 publications

References 16 publications

Kinetic and equilibrium studies of the removal of ammonium ions from aqueous solution by rice husk ash-synthesized zeolite Y and powdered and granulated forms of mordenite

Kinetic and equilibrium studies of the removal of ammonium ions from aqueous solution by rice husk ash-synthesized zeolite Y and powdered and granulated forms of mordenite

Catalytic pyrolysis of rice husk for bio-oil production

A Facile Hydrothermal Conversion of Rice Husk Ash to ZSM‐5 Zeolite Powders

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