US2022016600A1PendingUtilityA1

Microcrystalline cellulose particle supported sol-gel sorbents

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Assignee: KABIR ABUZARPriority: Jun 26, 2020Filed: Sep 3, 2021Published: Jan 20, 2022
Est. expiryJun 26, 2040(~14 yrs left)· nominal 20-yr term from priority
Inventors:Abuzar KabirKenneth G. Furton
B01J 20/291B01J 20/28047B01J 20/286B01J 20/3272B01J 20/3234G01N 30/30B01J 20/28026B01J 20/3208B01J 20/3021B01J 20/3212B01J 20/3293B01J 20/3282B01D 15/161B01J 20/267G01N 2030/567B01J 20/103B01J 20/3214B01J 20/3085
69
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Claims

Abstract

Solid phase extraction (SPE) sorbents and liquid chromatography (LC) stationary phases are provided, as well as methods of fabricating the same. The SPE sorbents and LC stationary phases can use microcrystalline cellulose particles as the substrate and sol-gel sorbent coating technology as the polymer/sorbent immobilization technology. The SPE sorbents and LC stationary phases are stable in a pH range of 1-13 and at a temperature of up to 350 ° C.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A composition, comprising:
 a substrate comprising microcrystalline cellulose particles; and   a sol-gel sorbent coated on the substrate,   the composition being stable in a pH range of 1-13, and   the composition being stable at a temperature of 350° C.   
     
     
         2 . The composition according to  claim 1 , the sol-gel sorbent being a polymer. 
     
     
         3 . The composition according to  claim 1 , the substrate being microcrystalline cellulose. 
     
     
         4 . The composition according to  claim 1 , the substrate being chemically pre-treated. 
     
     
         5 . The composition according to  claim 1 , the substrate being chemically pre-treated with a base and an acid. 
     
     
         6 . The composition according to  claim 5 , the acid being selected from HCl, trifluoroacetic acid, nitric acid, acetic acid, and formic acid. 
     
     
         7 . The composition according to  claim 6 , the base being ammonium hydroxide or NaOH. 
     
     
         8 . The composition according to  claim 5 , the base being ammonium hydroxide or NaOH. 
     
     
         9 . The composition according to  claim 1 , the composition being stable at a temperature greater than 350° C. 
     
     
         10 . The composition according  claim 1 , the sol-gel sorbent comprising C18, poly(dimethyldiphenyl), poly(ethylene glycol), polytetrahydrofuran, (p-methyl phenyl) methyldimethoxysilane, 3,4-methylenedioxyphenyltriethoxysilane, hydroxyterminated poly(dimethyl siloxane), or monohydroxyterminated poly(dimethylsiloxane). 
     
     
         11 . The composition according  claim 10 , the sol-gel sorbent comprising C18. 
     
     
         12 . The composition according  claim 10 , the sol-gel sorbent comprising poly(dimethyldiphenyl). 
     
     
         13 . The composition according  claim 10 , the sol-gel sorbent comprising poly(ethylene glycol). 
     
     
         14 . The composition according  claim 10 , the sol-gel sorbent comprising polytetrahydrofuran, (p-methyl phenyl) methyldimethoxysilane. 
     
     
         15 . The composition according  claim 10 , the sol-gel sorbent comprising 3,4-methylenedioxyphenyltriethoxysilane. 
     
     
         16 . The composition according  claim 10 , the sol-gel sorbent comprising hydroxyterminated poly(dimethyl siloxane). 
     
     
         17 . The composition according  claim 10 , the sol-gel sorbent comprising monohydroxyterminated poly(dimethylsiloxane). 
     
     
         18 . A composition, comprising:
 a substrate comprising microcrystalline cellulose particles; and   a sol-gel sorbent coated on the substrate,   the composition being stable in a pH range of 1-13,   the composition being stable at a temperature of 350° C. and a temperature greater than 350° C.,   the sol-gel sorbent being a polymer,   the substrate being microcrystalline cellulose,   the substrate being chemically pre-treated with an acid and a base, and   the sol-gel sorbent comprising C18, poly(dimethyldiphenyl), poly(ethylene glycol), polytetrahydrofuran, (p-methyl phenyl) methyldimethoxysilane, 3,4-methylenedioxyphenyltriethoxysilane, hydroxyterminated poly(dimethyl siloxane), or monohydroxyterminated poly(dimethylsiloxane).   
     
     
         19 . The composition according to  claim 18 , the acid being HCl. 
     
     
         20 . The composition according to  claim 19 , the base being NaOH.

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