Adsorption of sucrose on zeolites

被引：21

作者：

Fornefett, Iris ^{[1
,2
]}

Rabet, Davud ^{[1
]}

Buttersack, Christoph ^{[1
,3
]}

Buchholz, Klaus ^{[1
,4
]}

机构：

[1] Tech Univ Carolo Wilhelmina Braunschweig, Inst Carbohydrate Technol, D-38106 Braunschweig, Germany

[2] Continental AG, D-3000 Hannover, Germany

[3] Univ Leipzig, Inst Nonclass Chem, Permoser Str 15, D-04318 Leipzig, Germany

[4] Tech Univ Carolo Wilhelmina Braunschweig, Inst Tech Chem, Hans Sommer Str 10, D-38106 Braunschweig, Germany

来源：

GREEN CHEMISTRY | 2016年 / 18卷 / 11期

关键词：

LIQUID-PHASE ADSORPTION; DISACCHARIDE CONFORMATIONAL FLEXIBILITY; AQUEOUS-SOLUTIONS; Y-ZEOLITES; HYDROPHOBIC ZEOLITES; ORGANIC-COMPOUNDS; ACTIVATED CARBON; WATER MIXTURES; SELF-DIFFUSION; RAW JUICE;

D O I：

10.1039/c5gc02832a

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The adsorption of sucrose on FAU type zeolites was measured depending on the ratio of Si/Al and the solvent composition (ethanol-water). The maximal loading was found to be 1 sucrose molecule per alpha-cage. The adsorption can proceed from water on strong dealuminated zeolites and from an ethanol water mixture on aluminum rich zeolites. To recover sucrose the zeolite can be treated with ethanol water. Alternatively the liquid is first mixed with an alcohol, sucrose is adsorbed on a hydrophilic zeolite and desorbed by the addition of water. An application is reported for the desugarization of sugar-beet molasses and process liquids of a beet sugar factory. The adsorption obeys the Langmuir isotherm and is selective compared with other saccharides. The effective diffusion coefficient of sucrose inside the zeolite pores was measured.

引用

页码：3378 / 3388

页数：11

共 71 条

[1] ADSORPTION OF SACCHARIDES FROM AQUEOUS-SOLUTION ONTO ACTIVATED CARBON [J].