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Two-stage dehydration of sugars (Patent) | DOE Patents

An initial feed stream containing sorbitol is fed into a continuous reactor containing an acid catalyst at a temperature of less than 120.degree. C. The residence time for the reactor is less than or equal to about 30 minutes. Sorbitol converted to 1,4-sorbitan in the continuous reactor is subsequently provided to a second reactor and is .

Food/ Pharmaceuticals | XYTEL Corporation

Xytel has broad experience meeting challenges in the chemical and polymer industries and has set a solid foundation for conceiving continuous processing solutions for pharmaceutical and food industries.

METHOD FOR THE PRODUCTION OF GLYCOLS FROM SORBITOL

Jul 25, 2017 · As a result sorbitol is a side product and decreases the overall yield of higher valued EG and PG. As such, the presently disclosed subject matter relates to a process for preparing glycols, particularly ethylene glycol and propylene glycol, by converting a sorbitol feed material in a reactor using a bi-functional catalyst system.

APR of Sorbitol - LinkedIn SlideShare

Jan 26, 2016 · Products such as isosorbide and organic acids (100–500 ppm) were observed in the liquid products from an empty reactor with a feed of 5 wt% sorbitol heated at 538 K and 57.5 bar, whereas negligible amounts of liquid products were observed at 498 K and 36.5 bar.

Sibunit-Supported Mono- and Bimetallic Catalysts Used in .

reactor sorbitol7 fixed bed ethylene glycol,23,38−45 glycerol, 44− 49propylene glycol, xylitol,,50 sorbitol, 5152 ethylene glycol + KOH37 semibatch crude glycerol53 single-channel microreactor glycerol,44 glycerol + KOH55 Re/C autoclave glycerol27,56 fixed bed ethylene glycol44

Production of Sorbitol from Biomass | SpringerLink

Jun 15, 2017 · Abstract. Sorbitol is a natural occurring sugar alcohol with a current industrial demand of about 2,000,000 t.year −1 showing its huge worldwide commercial interest, encompassing uses in chemical, food, textiles, pharmaceutical, and health care and cosmetic industries. The current interest for substituting oil derived chemicals by biomass derived ones has boosted the interest in sorbitol .

Hydrogen Production from Glucose and Sorbitol by Sorption .

The experimental assessment was conducted at a steam‐to‐carbon ratio of 1.8 for sorbitol and 6 for glucose from 450–625 °C. . Coke accumulated in the reactor for the sorption‐enhanced steam reforming of glucose was mostly from the slow pyrolysis of glucose before it came into contact with the catalyst–acceptor bed. This problem may .

SORBITOL - Entrepreneur India

Sorbitol, a polyol (sugar alcohol), is a bulk sweetener. Sorbitol is produced either from starch hydrolysates, from dextrose syrup, or from dextrose monohydrate. It is a water soluble polyhydric alcohol, having sweet taste and high stability beside

Production of liquid alkanes by controlling reactivity of .

The activity test of the catalyst was carried out in a batch-type autoclave reactor with a capacity of 250 ml. Typically, 9.1 g of sorbitol and 3.0 g of the reduced catalyst were filled in the reactor with 150 ml of deionized water per run.

Glucose Hydrogenation in a Trickle-Bed Reactor - dKNAV

Catalytic hydrogenation of 40% aqueous solutions of D-glucose to D-glucitol was studied in a high-pressure trickle-bed reactor. The reactions were performed on a supported nickel catalyst at temperatures ranging from 115 to 165 °C and in the pressure range 0.5 to 10 MPa. The order of the reaction with respect to hydrogen is 0.65 and apparent activation energy 23.8-48.5 kJ mol .

Carbon‐Coated Ceramic Membrane Reactor for the Production .

Abstract Hydrogen was produced by aqueous‐phase reforming (APR) of sorbitol in a carbon‐on‐alumina tubular membrane reactor (4 nm pore size, 7 cm long, 3 mm internal diameter) that allows the hydro.

SORBITOL HYDROGENOLYSIS TO GLYCOLS OVER CARBON .

Sorbitol hydrogenolysis was conducted in trickle bed reactor at 240 . o. C and 6.0 MPa. The gas feedstock was pure hydrogen and the liquid feedstock was a 10 wt% sorbitol aqueous solution containing basic promoter NaOH (0.10 mol/kg). The gas hourly space velocity (GHSV) and the liquid hourly space velocity (LHSV) were kept at 2571 h-1. and 17 h-1

Kinetic study and flow reactor modeling of electrochemical .

The model also contained the kinetic rate equations for H sb2 evolution and glucose reduction which were obtained from the batch slurry reactor studies. The flow reactor model was solved in one-dimension with no adjustable parameters to predict sorbitol production rates and current efficiencies.

Glucose Hydrogenation in a Trickle-Bed Reactor - dKNAV

Catalytic hydrogenation of 40% aqueous solutions of D-glucose to D-glucitol was studied in a high-pressure trickle-bed reactor. The reactions were performed on a supported nickel catalyst at temperatures ranging from 115 to 165 °C and in the pressure range 0.5 to 10 MPa. The order of the reaction with respect to hydrogen is 0.65 and apparent activation energy 23.8-48.5 kJ mol .

Global Sorbitol Production Equipment Market Worth Reach .

Feb 13, 2019 · Sorbitol is mainly obtained from the catalytic hydrogenation of glucose, which involves extensive use of hydrogenation reactors. By region, Asia Pacific held an extensive revenue share of the global sorbitol production equipment market in 2017 and is expected to dominate the global market in the upcoming years.

sorbitol reactor, sorbitol reactor Suppliers and .

offers 269 sorbitol reactor products. About 24% of these are Reactors. A wide variety of sorbitol reactor options are available to you, such as local service location, key selling points, and applicable industries.

US20080249323A1 - Sorbitol Conversion Process - Google Patents

reactor sorbitol Prior art date 2007-04-06 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Granted Application number US12/060,929 Other versions US7982059B2 (en Inventor Aiguo Liu Christopher Luckett

SORBITOL - Entrepreneur India

Sorbitol, a polyol (sugar alcohol), is a bulk sweetener. Sorbitol is produced either from starch hydrolysates, from dextrose syrup, or from dextrose monohydrate. It is a water soluble polyhydric alcohol, having sweet taste and high stability beside

Production of Hydrogen by Biomass Reforming

Sorbitol in Continuous Plug Flow Reactor Technical Progress: Aqueous Phase Reforming of Sorbitol in Continuous Plug Flow Reactor Run#1 Literature Run#2 Literature Run#3 Catalyt 3%Pt/Al2O3 3%Pt/Al2O3 3%Pt/Al2O3 3%Pt/Al2O3 3%Pt/Al2O3 Liquid feed 10% Sorbitol 1% Sorbitol 10% Sorbitol 1% Sorbitol 10% Sorbitol T 225 225 265 265 225 P 471 425 835 812 475

Sorbitol - an overview | ScienceDirect Topics

Sorbitol is one of the main photosynthetic end products and serves as a storage and transport sugar in most plant families (Li et al., 2012).Synthesis of sorbitol takes place by catalysis of glucose via NADP-dependent sorbitol-6-phosphate dehydrogenase (S6PDH). Sorbitol is further degraded to fructose by NAD + sorbitol dehydrogenase in sink tissues (Liang et al., 2012).

HYDROGENATION OF GLUCOSE TO SORBITOL OVER .

Hydrogenation of glucose to sorbitol is an industrially important chemical process because of wide applications of sorbitol in food, drug and cosmetics.1 For example, D-sorbitol is an intermediate in the synthesis of vitamin C. Also, hydrogenation of glucose to sorbitol

US7982059B2 - Sorbitol conversion process - Google Patents

reactor sorbitol Prior art date 2007-04-06 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related, expires 2029-10-07 Application number US12/060,929 Other versions US20080249323A1 (en .

Conversion of biomass-derived sorbitol to glycols over .

For a typical test, known amounts of sorbitol aqueous solution and alkali were charged to the reactor along with an appropriate amount of catalysts. The reactor was purged three times with H 2 at 5 MPa and heated up to the desired temperature for a given period at 500 rpm stirring speed.

International Starch: Sorbitol and other polyols

Sorbitol and other polyols. Sorbitol is a sugar alcohol, C 6 H 14 O 6 found in nature as the sweet constituent of many berries and fruits best known from Sorbus aucuparia (Rowan or European Rowan) from which it was isolated for the first time in 1872. Mid 1950s, sorbitol large scale manufacture began due to new applications, such as humectant in cosmetology and sugar substitute in non .

Continuous production of gluconic acid and sorbitol from .

Feb 05, 1992 · In a continuous stirred tank reactor operation, the maximum productivities for gluconic acid and sorbitol were about 19.2 and 21.3 g/L/h, respectively, at the dilution rate of 0.23 h(-1) and the substrate concentration of 20%, but operational stability was low because of the abrasion of the beads.

Sorbitol Production | Air Liquide

Glucose from wet milling plants provides the feedstock for sorbitol production. Inside a batch reactor, the glucose solution is hydrogenated using a nickel or ruthenium catalyst. Following the reaction, which takes place at a temperature of 110 °Celsius and 40 bar pressure, the catalyst is .

PEER-REVIEWED ARTICLE bioresources.

The conversion of D-glucose into D-sorbitol is described in Fig. 1. All reactions were performed in a 50 mL high-pressure reactor (PARR 5500). A total of 25 mL of 10 wt.% D-glucose solution was prepared in water at approximately 65 °C. Next, 1.0 wt.% of the prepared catalyst was introduced into the reactor, and the reactor was purged with 3

METHOD FOR THE PRODUCTION OF GLYCOLS FROM SORBITOL

Jul 25, 2017 · As a result sorbitol is a side product and decreases the overall yield of higher valued EG and PG. As such, the presently disclosed subject matter relates to a process for preparing glycols, particularly ethylene glycol and propylene glycol, by converting a sorbitol feed material in a reactor using a bi-functional catalyst system.

Full text of "Kinetics Of Hydrogenation Of D-glucose To .

The data reported are likely to provide a rational basis for the design and operation of industrial reactors for the production of sorbitol. REFERE^JCES A;ion./ 'ocop 2 for sorbitol in India' a report by ll/s Pranava Industrial Services, Bombay, 1984, Monick A.J., 'Alcohols, their chemistry, properties and manuf .*

Sorbitol Octanoate - Agricultural Marketing Service

First, octanoic acid is placed in a reactor at a temperature sufficiently high to keep it in liquid form. Next, sorbitol is added in an amount that allows the production of a monoester, plus an additional 10% to drive the reaction to essentially completion. An esterification .