A new concept of designing and synthesizing highly dispersed ionic liquids was developed through physical confinement or encapsulation of them into silica gel matrix with sol-gel process. A series of silica gel confined ionic liquids were synthesized through this process and characterized by diffuse-reflectance infrared Fourier transform spectroscopy (DRIFTS) and FTRaman analysis, and abnormal ...

1. Introduction Porous solids with bimodal pore structures are widely used as catalyst supports. Examples are formed bodies, such as tablets, beads, extrudates, and monoliths, of molecular sieves, silica and alumina. The formed bodies are prepared usually by compacting fine micro-or mesoporous particles [1]. As a result, macropores are formed between the agglomerated particles. Recently, cataly...

Abstract: Bagasse is a solid waste from the sugar cane milling process in industry. The can be used as an ingredient making silica gel which functions adsorbent. This done by changing its chemical structure composition to increase role and function. study aims determine characteristics of synthesized bagasse (Saccharumofficinarum L.) modified using diphenylcarbazone much 0.24 g with sol-gel tec...

In this study, (3-mercaptopropyl) trimethoxysilane (MPTMS) modified silica nanoparticles (SiO2-MPTMS) were successfully prepared. The average size of SiO2-MPTMS was measured by Dynamic Light Scattering (DLS) as 341 nm in ethanol, while Scanning Transmission Electron Microscopy (STEM) analyzes confirmed that the nano-sized and revealed their shapes spherical. Then, 3D nanocomposite hydrogels pre...

Lecithin can be prepared on a relatively large scale, free of colored impurities, by a simple two-column procedure. Commercial crude egg lecithin is partially purified by a single-step passage through an alumina column. It is then purified by a two-step passage through a prepacked, commercial silica gel column. The lecithin is prepared in solvent-free form for weighing by lyophilization from cy...