EP2712936B1 - Produits de sucre et son procédé de fabrication - Google Patents

Produits de sucre et son procédé de fabrication Download PDF

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EP2712936B1
EP2712936B1 EP13186469.6A EP13186469A EP2712936B1 EP 2712936 B1 EP2712936 B1 EP 2712936B1 EP 13186469 A EP13186469 A EP 13186469A EP 2712936 B1 EP2712936 B1 EP 2712936B1
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Prior art keywords
chloride
mixing solution
bromide
fabricating
sugar product
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German (de)
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EP2712936A1 (fr
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Ruey-Fu Shih
Jia-Yuan Chen
Hui-Tsung Lin
Hom-Ti Lee
Hou-Peng Wan
Wei-Chun Hung
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Industrial Technology Research Institute ITRI
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Industrial Technology Research Institute ITRI
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Priority claimed from US13/973,072 external-priority patent/US20140090641A1/en
Priority claimed from CN201310435004.8A external-priority patent/CN103710472B/zh
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    • C—CHEMISTRY; METALLURGY
    • C13—SUGAR INDUSTRY
    • C13K—SACCHARIDES OBTAINED FROM NATURAL SOURCES OR BY HYDROLYSIS OF NATURALLY OCCURRING DISACCHARIDES, OLIGOSACCHARIDES OR POLYSACCHARIDES
    • C13K1/00—Glucose; Glucose-containing syrups
    • C13K1/02—Glucose; Glucose-containing syrups obtained by saccharification of cellulosic materials

Definitions

  • the technical field relates to a sugar product and fabricating method thereof.
  • the world is facing problems such as the gradual extraction and depletion of petroleum reserves, and changes to the earth's atmosphere due to the greenhouse effect. In order to ensure the sustainability of human life, it has become a world trend to gradually decrease the use of petrochemical energy and petroleum feedstock and to develop new sources of renewable energy and materials.
  • Lignocellulose is the main ingredient of biomass, which is the most abundant organic substance in the world. Lignocellulose mainly consists of 38-50% cellulose, 23-32% hemicellulose and 15-25% lignin. Cellulose generates glucose through hydrolysis. However, it is difficult for chemicals to enter the interior of cellulose molecules for depolymerization due to strong intermolecular and intramolecular hydrogen bonding and Van de Waal forces and the complex aggregate structure of cellulose with high-degree crystallinity. The main methods of hydrolyzing cellulose are enzyme hydrolysis and acid hydrolysis. However, there is significant imperfection in these two technologies, therefore, it is difficult to apply widely.
  • enzyme hydrolysis can be carried out at room temperature, which is an environmentally friendly method due to the rarity of byproducts, no production of anti-sugar fermentation substances, and integration with the fermentation process.
  • a complicated pretreatment process is required, hydrolytic activity is low, the reaction rate is slow, and cellulose hydrolysis enzyme is expensive.
  • Dilute acid hydrolysis generally uses comparatively cheap sulfuric acid as a catalyst, but it must operate in a corrosion-resistant pressure vessel at more than 200°C, requiring high-level equipment; simultaneously, the temperature of the dilute acid hydrolysis is high, the byproduct thereof is plentiful, and the sugar yield is low. Concentrated acid hydrolysis can operate at lower temperature and normal pressure. However, there are problems of strong corrosivity of concentrated acid, complications in the post-treatment process of the hydrolyzed solution, large consumption of acid, and difficulties with recycling, among other drawbacks.
  • WO 2006/007691 A1 discloses a sugar product which comprises glucose and a sugar monomer selected from the group consisting of xylose, arabinose, mannose, galactose and a combination thereof and acetic acid and also comprises an inorganic salt and acetate salt.
  • a sugar product comprising: a sugar mixture comprising glucose, xylose, mannose, arabinose and oligosaccharides thereof with a weight ratio of 2-15wt%; an acid compound with a weight ratio of 48-97wt%; and a salt compound with a weight ratio of 1-50wt%, wherein the salt compound comprises lithium chloride, magnesium chloride, calcium chloride, zinc chloride, iron chloride, lithium bromide, magnesium bromide, calcium bromide, zinc bromide or iron bromide.
  • One embodiment of the disclosure provides a method for fabricating a sugar product, comprising: mixing formic acid or acetic acid and lithium chloride, magnesium chloride, calcium chloride, zinc chloride, iron chloride, lithium bromide, magnesium bromide, calcium bromide, zinc bromide, iron bromide, or heteropoly acid to form a mixing solution; adding a cellulosic biomass to the mixing solution for a dissolution reaction; and adding water to the mixing solution for a hydrolysis reaction to obtain a sugar product.
  • a sugar product comprises a sugar mixture, an acid compound, and a salt compound.
  • the sugar mixture comprises glucose, xylose, mannose, arabinose and oligosaccharides thereof with a weight ratio of about 2-15wt% in the sugar product.
  • the acid compound may comprise formic acid or acetic acid with a weight ratio of about 48-97wt% in the sugar product.
  • the salt compound may comprise lithium chloride, magnesium chloride, calcium chloride, zinc chloride, iron chloride, lithium bromide, magnesium bromide, calcium bromide, zinc bromide, or iron bromide with a weight ratio of about 1-50wt% in the sugar product.
  • a method for fabricating a sugar product comprising the following steps. First, formic acid or acetic acid and lithium chloride, magnesium chloride, calcium chloride, zinc chloride, iron chloride, lithium bromide, magnesium bromide, calcium bromide, zinc bromide, iron bromide, or heteropoly acid are mixed to form a mixing solution. A cellulosic biomass is added to the mixing solution for a dissolution reaction. Water is added to the mixing solution for a hydrolysis reaction to obtain a sugar product.
  • the formic acid has a weight ratio of about 50-97wt% in the mixing solution.
  • the lithium chloride or lithium bromide has a weight ratio of about 5-20wt% or 10-20wt% in the mixing solution.
  • the magnesium chloride or magnesium bromide has a weight ratio of about 10-30wt% or 15-20wt% in the mixing solution.
  • the calcium chloride or calcium bromide has a weight ratio of about 12-40wt% or 12-30wt% in the mixing solution.
  • the zinc chloride or zinc bromide has a weight ratio of about 5-45wt% or 20-30wt% in the mixing solution.
  • the iron chloride or iron bromide has a weight ratio of about 1-50wt% or 5-10wt% in the mixing solution.
  • the heteropoly acid may comprise H 3 PW 12 O 40 , H 4 SiWi 2 O 40 , H 3 PMo 12 O 40 or H 4 SiMo 12 O 40 with a weight ratio of about 1-5wt% or 2-5wt% in the mixing solution.
  • the cellulosic biomass may be derived from wood, grass, leaves, algae, waste paper, corn stalks, corn cobs, rice straw, rice husk, wheat straw, bagasse, bamboo, or crop stems.
  • the cellulosic biomass may comprise cellulose, hemicellulose, or lignin with a weight ratio of about 1-20wt% or 5-15wt% in the mixing solution.
  • the dissolution reaction has a reaction temperature of about 40-90 or 50-70 and a reaction time of about 20-360 minutes or 30-120 minutes.
  • the amount of water added is larger than the total molar equivalent of monosaccharides hydrolyzed from the cellulosic biomass.
  • the hydrolysis reaction has a reaction temperature of about 50-150°C or 60-105 °C and a reaction time of about 30-180 minutes or 30-120 minutes.
  • the sugar product fabricated by the method may comprise a sugar mixture, an acid compound, and a salt compound.
  • the sugar mixture may comprise glucose, xylose, mannose, arabinose and oligosaccharides thereof with a weight ratio of about 2-15wt% in the sugar product.
  • the acid compound may comprise formic acid or acetic acid with a weight ratio of about 48-97wt% in the sugar product.
  • the salt compound may comprise lithium chloride, magnesium chloride, calcium chloride, zinc chloride, iron chloride, lithium bromide, magnesium bromide, calcium bromide, zinc bromide, or iron bromide with a weight ratio of about 1-50wt% in the sugar product.
  • the method further comprises adding inorganic acid to the mixing solution before, during or after the dissolution reaction.
  • the inorganic acid may comprise sulfuric acid or hydrochloric acid.
  • the inorganic acid has a weight ratio of about 1-2wt% in the mixing solution.
  • the adding amount of the chloride salt or the bromide salt may be reduced, for example, the weight ratio of the magnesium chloride, the magnesium bromide, the calcium chloride or the calcium bromide in the mixing solution may be reduced to about 1-10wt%, and the weight ratio of the lithium chloride, the lithium bromide, the zinc chloride, the zinc bromide, the iron chloride or the iron bromide in the mixing solution may be reduced to about 1-5wt%.
  • formic acid or acetic acid (weak acid) is mixed with lithium chloride, magnesium chloride, calcium chloride, zinc chloride, iron chloride, lithium bromide, magnesium bromide, calcium bromide, zinc bromide, or iron bromide to be utilized as a solvent with the characteristic of dissolving cellulose under low temperature ( ⁇ 90°C) and rapid reaction time ( ⁇ 6 hours) to generate a homogeneous liquid.
  • cellulose is dissolved in the solvent formed by chloride salt or bromide salt and formic acid or acetic acid to generate a homogeneous liquid at 40-150°C, and a sugar product is further obtained through hydrolysis. This method achieves the technical goals of low temperature, normal pressure, rapid reaction time and high sugar yield and without use of a strong acid corrosion-resistant reactor.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (60wt% of formic acid, 40wt% of zinc chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (15wt% of Avicel ® cellulose) for a dissolution reaction (50 , 20 minutes) to form a yellow, homogeneous, and transparent liquid, as recorded in Table 1.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (60wt% of formic acid, 40wt% of zinc chloride).
  • ⁇ -cellulose Sigma Corporation, C8002 was added to the mixing solution (15wt% of ⁇ -cellulose) for a dissolution reaction (50°C, 20 minutes) to form an amber, homogeneous, and transparent liquid, as recorded in Table 1.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed and heated to form a mixing solution (75wt% of formic acid, 25wt% of calcium chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (6wt% of Avicel ® cellulose) for a dissolution reaction (65 °C , 90 minutes) to form a yellow, homogeneous, and transparent liquid, as recorded in Table 1.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed and heated to form a mixing solution (75wt% of formic acid, 25wt% of calcium chloride).
  • ⁇ -cellulose Sigma Corporation, C8002 was added to the mixing solution (6wt% of ⁇ -cellulose) for a dissolution reaction (65°C, 90 minutes) to form an amber, homogeneous, and transparent liquid, as recorded in Table 1.
  • Formic acid and magnesium chloride (MgCl 2 ) were mixed and heated to form a mixing solution (80wt% of formic acid, 20wt% of magnesium chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (65 °C , 120 minutes) to form an amber, homogeneous, and transparent liquid, as recorded in Table 1.
  • Formic acid and magnesium chloride (MgCl 2 ) were mixed and heated to form a mixing solution (80wt% of formic acid, 20wt% of magnesium chloride).
  • ⁇ -cellulose Sigma Corporation, C8002 was added to the mixing solution (5wt% of ⁇ -cellulose) for a dissolution reaction (65°C, 120 minutes) to form an amber, homogeneous, and transparent liquid, as recorded in Table 1.
  • Table 1 Examples Salt (wt%) Cellulose (wt%) Dissolution temp.
  • Formic acid and lithium chloride (LiCl) were mixed and heated to form a mixing solution (90wt% of formic acid, 10wt% of lithium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and lithium chloride (LiCl) were mixed and heated to form a mixing solution (95wt% of formic acid, 5wt% of lithium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 12 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and sodium chloride (NaCl) were mixed and heated to form a mixing solution (90wt% of formic acid, 10wt% of sodium chloride (saturated solution)).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 19 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and lithium bromide (LiBr) were mixed and heated to form a mixing solution (90wt% of formic acid, 10wt% of lithium bromide).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 0.5 hour). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and sodium bromide (NaBr) were mixed and heated to form a mixing solution (82wt% of formic acid, 18wt% of sodium bromide).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 9 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and calcium bromide (CaBr 2 ) were mixed and heated to form a mixing solution (88wt% of formic acid, 12wt% of calcium bromide).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and barium bromide (BaBr 2 ) were mixed and heated to form a mixing solution (80wt% of formic acid, 20wt% of barium bromide).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and magnesium chloride (MgCl 2 ) were mixed and heated to form a mixing solution (80wt% of formic acid, 20wt% of magnesium chloride (saturated solution)).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (65 °C , 2 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and magnesium chloride (MgCl 2 ) were mixed and heated to form a mixing solution (90wt% of formic acid, 10wt% of magnesium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 12 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed and heated to form a mixing solution (75wt% of formic acid, 25wt% of calcium chloride (saturated solution)).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (65°C, 1.5 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed and heated to form a mixing solution (82.5wt% of formic acid, 17.5wt% of calcium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 2 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed and heated to form a mixing solution (88wt% of formic acid, 12wt% of calcium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed and heated to form a mixing solution (90wt% of formic acid, 10wt% of calcium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 12 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and barium chloride (BaCl 2 ) were mixed and heated to form a mixing solution (85wt% of formic acid, 15wt% of barium chloride (saturated solution)).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, >6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (60wt% of formic acid, 40wt% of zinc chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (50°C, 0.25 hour). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (80wt% of formic acid, 20wt% of zinc chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (65°C, 0.25 hour). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (95wt% of formic acid, 5wt% of zinc chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (98wt% of formic acid, 2wt% of zinc chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C , >6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and iron chloride (FeCl 3 ) were mixed and heated to form a mixing solution (95wt% of formic acid, 5wt% of iron chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 1 hour). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and iron chloride (FeCl 3 ) were mixed and heated to form a mixing solution (98wt% of formic acid, 2wt% of iron chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 3 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and iron chloride (FeCl 3 ) were mixed and heated to form a mixing solution (99wt% of formic acid, 1wt% of iron chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and ammonium chloride (NH 4 Cl) were mixed and heated to form a mixing solution (90wt% of formic acid, 10wt% of ammonium chloride (saturated solution)).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, >12 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and aluminum chloride (AlCl 3 ) were mixed and heated to form a mixing solution (98wt% of formic acid, 2wt% of aluminum chloride (saturated solution)).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70 °C , 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and tin chloride (SnCl 3 ) were mixed and heated to form a mixing solution (95wt% of formic acid, 5wt% of tin chloride (saturated solution)).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70 °C , 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and calcium sulfate (CaSO 4 ) were mixed and heated to form a mixing solution (80wt% of formic acid, 20wt% of calcium sulfate).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Formic acid and heteropoly acid (H 3 PW 12 O 40 ) were mixed and heated to form a mixing solution (99wt% of formic acid, 1wt% of heteropoly acid).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours). The dissolution of cellulose was observed using a polarizing microscope, as recorded in Table 2.
  • Table 2 Examples Salt wt% Dissolution temp.
  • Formic acid and magnesium chloride (MgCl 2 ) were mixed by stirring and heated to 70°C under 1 atm to form a mixing solution (80wt% of formic acid, 20wt% of magnesium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 2 hours).
  • water was added to the mixing solution (50wt% of water) and the mixing solution was heated to 100°C for a hydrolysis reaction (120 minutes).
  • saturated sodium carbonate (Na 2 CO 3 ) aqueous solution was added to neutralize the mixing solution.
  • Magnesium carbonate (MgCO 3 ) precipitate was then removed from the mixing solution.
  • the total weight of the reducing sugar was measured using 3,5-dinitro-salicylic acid (DNS) method.
  • DNS 3,5-dinitro-salicylic acid
  • the yield of the reducing sugar was then calculated.
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the weight of the cellulose. The result is shown in Table 3.
  • Formic acid and magnesium chloride (MgCl 2 ) were mixed by stirring and heated to 70°C under 1 atm to form a mixing solution (90wt% of formic acid, 10wt% of magnesium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 6 hours).
  • water was added to the mixing solution (50wt% of water) and the mixing solution was heated to 100°C for a hydrolysis reaction (120 minutes).
  • saturated sodium carbonate (Na 2 CO 3 ) aqueous solution was added to neutralize the mixing solution.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed by stirring and heated to 50°C under 1 atm to form a mixing solution (85wt% of formic acid, 15wt% of calcium chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (50°C, 4 hours).
  • water was added to the mixing solution (50wt% of water) and the mixing solution was heated to 100°C for a hydrolysis reaction (60 minutes).
  • saturated sodium carbonate (Na 2 CO 3 ) aqueous solution was added to neutralize the mixing solution.
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the weight of the cellulose. The result is shown in Table 4.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed by stirring and heated to 70°C under 1 atm to form a mixing solution (88wt% of formic acid, 12wt% of calcium chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (70°C, 4 hours).
  • water was added to the mixing solution (50wt% of water) and the mixing solution was heated to 100°C for a hydrolysis reaction (60 minutes).
  • saturated sodium carbonate (Na 2 CO 3 ) aqueous solution was added to neutralize the mixing solution.
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the weight of the cellulose. The result is shown in Table 4.
  • Formic acid and calcium chloride (CaCl 2 ) were mixed by stirring and heated to 90°C under 1 atm to form a mixing solution (90wt% of formic acid, 10wt% of calcium chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI
  • was added to the mixing solution 5wt% of Avicel ® cellulose
  • dissolution reaction 90°C, 4 hours.
  • water was added to the mixing solution (50wt% of water) and the mixing solution was heated to 100°C for a hydrolysis reaction (60 minutes).
  • saturated sodium carbonate (Na 2 CO 3 ) aqueous solution was added to neutralize the mixing solution.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed by stirring and heated to 50°C under 1 atm to form a mixing solution (60wt% of formic acid, 40wt% of zinc chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (50°C).
  • water was added to the mixing solution (50wt% of water) and the mixing solution was heated to 100°C for a hydrolysis reaction (30 minutes).
  • saturated sodium carbonate (Na 2 CO 3 ) aqueous solution was added to neutralize the mixing solution.
  • Zinc carbonate (ZnCO 3 ) precipitate was then removed from the mixing solution.
  • the total weight of the reducing sugar was measured using 3,5-dinitro-salicylic acid (DNS) method.
  • DNS 3,5-dinitro-salicylic acid
  • the yield of the reducing sugar was then calculated.
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the weight of the cellulose. The result is shown in Table 5.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed by stirring and heated to 50°C under 1 atm to form a mixing solution (60wt% of formic acid, 40wt% of zinc chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (50°C).
  • water was added to the mixing solution (50wt% of water) and the mixing solution was heated to 100°C for a hydrolysis reaction (45 minutes).
  • saturated sodium carbonate (Na 2 CO 3 ) aqueous solution was added to neutralize the mixing solution.
  • Zinc carbonate (ZnCO 3 ) precipitate was then removed from the mixing solution.
  • the total weight of the reducing sugar was measured using 3,5-dinitro-salicylic acid (DNS) method.
  • DNS 3,5-dinitro-salicylic acid
  • the yield of the reducing sugar was then calculated.
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the weight of the cellulose.
  • Table 5 Examples Cellulose (wt%) Adding amount of water (wt%) Hydrolysis time (min) Yield of reducing sugar (%) 5-1 5 50 30 65 5-2 5 50 45 89
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed by stirring and heated to 55 °C under 1 atm to form a mixing solution (60wt% of formic acid, 40wt% of zinc chloride).
  • Dried bagasse (comprising 43.58wt% of glucan, 24.02wt% of xylan, 12.45wt% of acid-soluble lignin, 18.12wt% of acid-insoluble lignin and 1.71wt% of ash) was added to the mixing solution (5wt% of bagasse) for a dissolution reaction (55 °C).
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the glucose is the ratio of the moles of the produced glucose and the moles of the glucose monomers contained in the cellulose in the bagasse.
  • the yield of the xylose is the ratio of the moles of the produced xylose and the moles of the xylose monomers contained in the hemicellulose in the bagasse.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the total weight of the cellulose and hemicellulose in the bagasse. The result is shown in Table 6.
  • a hydrolyzed solution comprising 25.3wt% of zinc chloride, 33.2wt% of water, 38.2wt% of formic acid, 2.3wt% of reducing sugar (comprising 43.2wt% of glucose and 30.4wt% of xylose), 0.4wt% of acid-soluble lignin and 0.6wt% of acid-insoluble lignin was formed.
  • Table 6 Examples Bagasse (wt%) Amount of water added (wt%) Hydrolysis time (min) Yield of glucose (%) Yield of xylose (%) Yield of reducing sugar (%) 6-1 5 50 30 36.3 88.5 93.3 6-2 5 50 60 53.3 94.2 97.9 6-3 5 50 120 70.4 89.9 105.2
  • Formic acid and magnesium chloride (MgCl 2 ) were mixed by stirring and heated to 50°C under 1 atm to form a mixing solution (80wt% of formic acid, 20wt% of magnesium chloride).
  • Avicel ® cellulose (Sigma Corporation, Avicel-pH-105-27NI) was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (50°C, 2.5 hours).
  • water was added to the mixing solution (50wt% of water) and the mixing solution was heated to 100°C for a hydrolysis reaction (90 minutes).
  • saturated sodium carbonate (Na 2 CO 3 ) aqueous solution was added to neutralize the mixing solution.
  • Formic acid and zinc chloride (ZnCl 2 ) were mixed by stirring and heated to 55 °C under 1 atm to form a mixing solution (60wt% of formic acid, 40wt% of zinc chloride).
  • Dried corn stalks (comprising 44.5wt% of glucan, 12.4wt% of xylan, 4.6wt% of acid-soluble lignin, 24.4wt% of acid-insoluble lignin, 2.7wt% of water and 3.8wt% of ash) was added to the mixing solution (5wt% of corn stalks) for a dissolution reaction (55°C).
  • the yield of the reducing sugar was then calculated.
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the total weight of the cellulose and hemicellulose in the corn stalks. The result is shown in Table 8.
  • Table 8 Examples Corn stalks (wt%) Amount of water added (wt%) Hydrolysis time (min) Yield of glucose (%) Yield of reducing sugar (%) 8 5 50 90 85 96
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the glucose is the ratio of the moles of the produced glucose and the moles of the glucose monomers contained in the cellulose in the bagasse.
  • the yield of the xylose is the ratio of the moles of the produced xylose and the moles of the xylose monomers contained in the hemicellulose in the bagasse.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the total weight of the cellulose and hemicellulose in the bagasse. The result is shown in Table 9.
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the glucose is the ratio of the moles of the produced glucose and the moles of the glucose monomers contained in the cellulose in the bagasse.
  • the yield of the xylose is the ratio of the moles of the produced xylose and the moles of the xylose monomers contained in the hemicellulose in the bagasse.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the total weight of the cellulose and hemicellulose in the bagasse. The result is shown in Table 9.
  • 98wt% of H 2 SO 4 , iron chloride (FeCl 3 ) and formic acid were mixed by stirring and heated to 55°C under 1 atm to form a mixing solution (1wt% of H 2 SO 4 , 2wt% of iron chloride, 97wt% of formic acid).
  • Dried bagasse (comprising 40.7wt% of glucan, 20.5wt% of xylan, 2.9wt% of Arab polysaccharides, 27.4wt% of lignin, 3.3wt% of ash and 5.2wt% of other ingredients) was added to the mixing solution (10wt% of bagasse) for a dissolution reaction (65°C).
  • the reducing sugar comprised glucose, xylose, mannose, arabinose and oligosaccharides thereof.
  • the yield of the glucose is the ratio of the moles of the produced glucose and the moles of the glucose monomers contained in the cellulose in the bagasse.
  • the yield of the xylose is the ratio of the moles of the produced xylose and the moles of the xylose monomers contained in the hemicellulose in the bagasse.
  • the yield of the reducing sugar is the ratio of the total weight of the reducing sugar and the total weight of the cellulose and hemicellulose in the bagasse.
  • Formic acid acetic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (54wt% of formic acid, 6wt% of acetic acid and 40wt% of zinc chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (60°C, 60 minutes), forming an amber transparent liquid with an uniform phase. The dissolution of cellulose was observed using a polarizing microscope. The cellulose was completely dissolved.
  • Formic acid acetic acid and calcium chloride (CaCl 2 ) were mixed and heated to form a mixing solution (72wt% of formic acid, 8wt% of acetic acid and 20wt% of calcium chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (60°C, 180 minutes), forming an amber transparent liquid with an uniform phase. The dissolution of cellulose was observed using a polarizing microscope. The cellulose was completely dissolved.
  • Formic acid acetic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (50wt% of formic acid, 10wt% of acetic acid and 40wt% of zinc chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (65°C, 60 minutes), forming an amber transparent liquid with an uniform phase. The dissolution of cellulose was observed using a polarizing microscope. The cellulose was completely dissolved.
  • Formic acid acetic acid and zinc chloride (ZnCl 2 ) were mixed and heated to form a mixing solution (40wt% of formic acid, 20wt% of acetic acid and 40wt% of zinc chloride).
  • Avicel ® cellulose Sigma Corporation, Avicel-pH-105-27NI was added to the mixing solution (5wt% of Avicel ® cellulose) for a dissolution reaction (65°C, 60 minutes), forming an amber transparent liquid with an uniform phase. The dissolution of cellulose was observed using a polarizing microscope. The cellulose was completely dissolved.

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Claims (30)

  1. Produit formant sucre, comprenant :
    un mélange de sucre comprenant du glucose, du xylose, du mannose, de l'arabinose et des oligosaccharides de ceux-ci avec un rapport massique de 2 à 15 % en poids ;
    un composé acide avec un rapport massique de 48 à 97 % en poids ; et
    un composé salin avec un rapport massique de 1 à 50 % en poids, dans lequel le composé salin comprend du chlorure de lithium, du chlorure de magnésium, du chlorure de calcium, du chlorure de zinc, de chlorure de fer, du bromure de lithium, du bromure de magnésium, du bromure de calcium, du bromure de zinc ou du bromure de fer.
  2. Produit formant sucre selon la revendication 1, dans lequel le composé acide comprend des composés d'acide organique ou des composés d'acide inorganique.
  3. Produit formant sucre selon la revendication 1, dans lequel le composé acide comprend de l'acide formique, de l'acide acétique ou un mélange de ceux-ci.
  4. Procédé de fabrication d'un produit formant sucre, comprenant :
    le mélange d'un composé acide et de chlorure lithium, de chlorure de magnésium, de chlorure de calcium, de chlorure de zinc, de chlorure de fer, de bromure de lithium, de bromure de magnésium, de bromure de calcium, de bromure de zinc, de bromure de fer ou d'un hétéropolyacide de manière à former une solution de mélange ;
    l'ajout d'une biomasse de cellulose à la solution de mélange afin d'assurer une réaction de dissolution ; et
    l'ajout d'eau à la solution de mélange afin d'assurer une réaction d'hydrolyse de manière à obtenir un produit formant sucre.
  5. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel le composé acide comprend de l'acide formique, de l'acide acétique ou un mélange de ceux-ci.
  6. Procédé de fabrication d'un produit formant sucre selon la revendication 5, dans lequel l'acide formique ou l'acide acétique présente un rapport massique de 50 à 97 % en poids dans la solution de mélange.
  7. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel le chlorure de lithium ou le bromure de lithium présente un rapport massique de 5 à 20 % en poids dans la solution de mélange.
  8. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel le chlorure de magnésium ou le bromure de magnésium présente un rapport massique de 10 à 30 % en poids dans la solution de mélange.
  9. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel le chlorure de calcium ou le bromure de calcium présente un rapport massique de 12 à 40 % en poids dans la solution de mélange.
  10. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel le chlorure de zinc ou le bromure de zinc présente un rapport massique de 5 à 45 % en poids dans la solution de mélange.
  11. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel le chlorure de fer ou le bromure de fer présente un rapport massique de 1 à 50 % en poids dans la solution de mélange.
  12. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel l'hétéropolyacide comprend le H3PW12O40, le H4SiW12O40, le H3PMo12O40 ou le H4SiMo12O40.
  13. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel l'hétéropolyacide présente un rapport massique de 1 à 5 % en poids dans la solution de mélange.
  14. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel la biomasse cellulosique comprend de la cellulose, de l'hémicellulose ou de la lignine.
  15. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel la biomasse de cellulose est un dérivé de bois, d'herbe, de feuilles, d'algues, de déchet de papier, de maïs en grain, d'épis de maïs, de paille de riz, de cosse de riz, de tiges de paille de blé, de bagasse, de bambou ou de tiges de plantes.
  16. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel la réaction de dissolution présente une température de réaction de 40 à 90°C.
  17. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel la réaction de dissolution présente un temps de réaction de 20 à 360 mn.
  18. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel la quantité d'eau ajoutée est supérieure à l'équivalent molaire total des monosaccharides hydrolysés à partir de la biomasse cellulosique.
  19. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel la réaction d'hydrolyse présente une température de réaction de 50 à 150°C.
  20. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel la réaction d'hydrolyse présente un temps de réaction de 30 à 180 minutes.
  21. Procédé de fabrication d'un produit formant sucre selon la revendication 4, dans lequel le produit formant sucre comprend un mélange de sucre, un composé d'acide et un composé salin.
  22. Procédé de fabrication d'un produit formant sucre selon la revendication 21, dans lequel le mélange de sucre comprend du glucose, du xylose, du mannose, de l'arabinose et des oligosaccharides de ceux-ci.
  23. Procédé de fabrication d'un produit formant sucre selon la revendication 21, dans lequel le mélange de sucre présente un rapport massique de 2 à 15 % en poids dans le produit formant sucre.
  24. Procédé de fabrication d'un produit formant sucre selon la revendication 21, dans lequel le composé salin comprend du chlorure de lithium, du chlorure de magnésium, du chlorure de calcium, du chlorure de zinc, du chlorure de fer, du bromure de lithium, du bromure de magnésium, du bromure de calcium, du bromure de zinc ou du bromure de fer.
  25. Procédé de fabrication d'un produit formant sucre selon la revendication 21, dans lequel le composé salin présente un rapport massique de 1 à 50 % en poids dans le produit formant sucre.
  26. Procédé de fabrication d'un produit formant sucre selon la revendication 4 comprenant, en outre, l'ajout d'acide inorganique à la solution de mélange.
  27. Procédé de fabrication d'un produit formant sucre selon la revendication 26, dans lequel l'acide inorganique comprend de l'acide sulfurique ou de l'acide chlorhydrique.
  28. Procédé de fabrication d'un produit formant sucre selon la revendication 26, dans lequel l'acide inorganique présente un rapport massique de 1 à 2 % en poids dans la solution de mélange.
  29. Procédé de fabrication d'un produit formant sucre selon la revendication 26, dans lequel le chlorure de magnésium, le bromure de magnésium, le chlorure de calcium ou le bromure de calcium présente un rapport massique de 1 à 10 % en poids dans la solution de mélange.
  30. Procédé de fabrication d'un produit formant sucre selon la revendication 26, dans lequel le chlorure de lithium, le bromure de lithium, le chlorure de zinc, le bromure de zinc, le chlorure de fer ou le bromure de fer présente un rapport massique de 1 à 5 % en poids dans la solution de mélange.
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