title: Zeolite materials prepared using silicate waste from template synthesis of ordered mesoporous carbon.
abstract: Significant amount of silica waste is generated in the preparation of porous carbon materials using template synthesis. Industrial production of such porous carbon not only creates waste chemicals, but also poses significant environmental concerns and high waste treatment cost. Recycling is proposed as the best solution for tackling such chemical wastes. In this study, etched silica waste released from template synthesis of mesoporous carbon is recycled to produce precious functional microporous zeolite materials. The solid silica template is etched out with NaOH solution to produce silica-free mesoporous carbon. The collected silica waste is recycled to generate zeolites such as LTA and MFI type silica materials. The formation of zeolites is confirmed by FT-IR, XRD, (29)Si NMR, (27)Al NMR, and SEM. This straight forward green chemistry route not only recycles the waste chemicals, but also decreases environmental pollution for better improvement of our living.
authors.affiliation: Department of Advanced Materials Chemistry, Korea University, 2511 Sejong-ro, Sejong City 339-700, Republic of Korea.
authors.forename: Yun Kyung
authors.initials: YK
authors.lastname: Kim
authors.forename: Kizhakke Palleeri
authors.initials: KP
authors.lastname: Rajesh
authors.forename: Jong-Sung
authors.initials: JS
authors.lastname: Yu
mesh_terms: D000327:Adsorption; D002244:Carbon / Q000737:chemistry*; D003247:Conservation of Natural Resources; D004785:Environmental Pollutants; D055772:Green Chemistry Technology; D007220:Industrial Waste; D009682:Magnetic Resonance Spectroscopy; D008855:Microscopy, Electron, Scanning; D046529:Microscopy, Electron, Transmission; D009584:Nitrogen / Q000737:chemistry; D016062:Porosity; D059027:Recycling; D017640:Silicates / Q000737:chemistry*; D012822:Silicon Dioxide / Q000737:chemistry; D012972:Sodium Hydroxide / Q000737:chemistry; D017550:Spectroscopy, Fourier Transform Infrared; D014874:Water Pollutants, Chemical / Q000032:analysis*; D018508:Water Purification / Q000379:methods; D014961:X-Ray Diffraction; D017641:Zeolites / Q000737:chemistry*
chemical_list: D004785:Environmental Pollutants; D007220:Industrial Waste; D017640:Silicates; D014874:Water Pollutants, Chemical; D017641:Zeolites; D012972:Sodium Hydroxide; D002244:Carbon; D012822:Silicon Dioxide; D009584:Nitrogen
keywords: Porous carbon; Recycling; Silica waste; Sodium silicate; Template synthesis; Zeolites