Hydrothermal Synthesis of SBA‐15 Using Sodium Silicate Derived from Coal Gangue

Wang, Jing; Li, Fang; Cheng, Fangqin; Duan, Xiaofang; Chen, Rongming

doi:10.1155/2013/352157

Cited by 14 publications

(10 citation statements)

References 21 publications

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“…The N2 physisorption analysis revealed that the synthesized KCC-1 possesses BET surface area (SBET) of 220 m 2 /g, pore size (dp) of 17.37 nm, and pore volume (Vp) of 0.94 cm 3 /g. As compared to the literature [29], the synthesized KCC-1 has relatively lower SBET as compared to the literature (386 m 2 /g) that synthesized using TEOS, might be caused by the impurities that existing in RHA, thus, affected the KCC-1 structure [30]. This study was in agreement with Wang et al [30] whom reported that the textural properties of SBA-15 synthesized using coal gangue (SBET = 552 m 2 /g, dp = 7.0 nm, and Vp = 0.54 cm 3 /g) was lower than that of SBA-15 synthesized using commercial sodium silicate (SBET = 567 m 2 /g, dp = 7.2 nm, and Vp = 0.68 cm 3 /g), due to the impurities present in coal gangue.…”

Section: Characterization Of Kcc-1 Synthesized From Rhamentioning

confidence: 60%

Synthesis of KCC-1 Using Rice Husk Ash for Pb Removal from Aqueous Solution and Petrochemical Wastewater

Hasan

Chong

Setiabudi

2019

Bull. Chem. React. Eng. Catal.

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A silica-rich rice husk ash (RHA, 95.44% SiO2) was used as a silica precursor in the synthesis of KCC-1 for Pb(II) removal. The extraction of silica was carried out under several extraction methods (alkali fusion (AF), reflux (RF) and microwave heating (MW)) and extraction parameters (NaOH/RHA mass ratio, fusion temperature and H2O/NaOH-fused RHA mass ratio). The highest silica content was obtained using AF method at extraction conditions of NaOH/RHA mass ratio = 2, fusion temperature = 550 ºC, and H2O/NaOH-fused RHA mass ratio = 4, with silica concentration of 85,490 ppm. TEM, FTIR, and BET analyses revealed the synthesized KCC-1 has fibrous morphology with surface area of 220 m 2 /g. The synthesized KCC-1 showed good performance in removal of Pb(II) from aqueous solution (74%) and petrochemical wastewater (70%). The analyses of petrochemical wastewater revealed that the adsorption process using synthesized KCC-1 effectively decreased the concentration of COD (489 mg/L to 106 mg/L), BOD (56 mg/L to 34 mg/L) and Pb(II) (22.8 mg/L to 6.71 mg/L). This study affirmed that KCC-1 was successfully synthesized using RHA as silica precursor and applied as an efficient adsorbent for Pb(II) removal.

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Section: Characterization Of Kcc-1 Synthesized From Rhamentioning

confidence: 60%

Synthesis of KCC-1 Using Rice Husk Ash for Pb Removal from Aqueous Solution and Petrochemical Wastewater

Hasan

Chong

Setiabudi

2019

Bull. Chem. React. Eng. Catal.

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“…The morphologies of Zr-La/SBA-15-SG consisting of twisted clusters of shortsized rods with relatively uniform size, are formed by aggregates of fibers or rods connected into ropelike macrostructures 45 .This type of morphology has been proven to have long range parallel channels with hexagonal mesostructure. For Zr-La/SBA-15-HT, it shows spherical particles together with some small irregular shape particles, indicating poor long-range ordered structures 46 . The EDX spectra of Zr-La/SBA-15-SG and Zr-La/SBA-15-HT are shown in Figs.…”

Section: Catalyst Characterizationmentioning

confidence: 99%

Production of Ethylene through Ethanol Dehydration on SBA-15 Catalysts Synthesized by Sol-gel and One-step Hydrothermal Methods

Autthanit

Jongsomjit

2018

J. Oleo Sci.

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The present work deals with the catalytic performance of SBA-15 supported catalysts in the gas phase catalytic dehydration of ethanol in the temperature range of 200 to 400°C. The SBA-15 support was incorporated on a zirconium (Zr) and bimetal of zirconium and lanthanum (Zr-La) prepared by sol-gel (SG) and hydrothermal (HT) methods. The catalysts were characterized by means of N physisorption, SEM/EDX, and NH-TPD. The experimental results demonstrated that the Zr-La/SBA-15-HT exhibited the highest catalytic activity. Ethanol conversion and ethylene selectivity were found to increase with increased reaction temperature. The best catalytic results were achieved for Zr-La/SBA-15-HT indicating values of ethanol conversion and ethylene yield of ca. 84% and 80%, respectively at 400°C. The most important parameter influencing their catalytic properties appears to be the interaction between metal and support depending on different methods. The metal dispersion inside the siliceous matrix of SBA-15 has a direct influence on their surface acidity. Meanwhile, the performance of these SBA-15 supported catalysts in ethanol dehydration is also related with the alteration of surface acidity caused by the introduction of Zr and Zr-La.

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“…Coal gangue could be used as a SiO 2À 3 source [18] to synthesis PSM in this work. Firstly, the raw coal gangue was milled and sieved.…”

Section: The Preparation Of Sio 2à 3 Leachate From Coal Ganguementioning

confidence: 99%

Preparation and characterization of a novel porous silicate material from coal gangue

Gao

Huang

Tang

et al. 2015

Microporous and Mesoporous Materials

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Hydrothermal Synthesis of SBA‐15 Using Sodium Silicate Derived from Coal Gangue

Cited by 14 publications

References 21 publications

Synthesis of KCC-1 Using Rice Husk Ash for Pb Removal from Aqueous Solution and Petrochemical Wastewater

Synthesis of KCC-1 Using Rice Husk Ash for Pb Removal from Aqueous Solution and Petrochemical Wastewater

Production of Ethylene through Ethanol Dehydration on SBA-15 Catalysts Synthesized by Sol-gel and One-step Hydrothermal Methods

Preparation and characterization of a novel porous silicate material from coal gangue

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