US20090056204A1 - Method of synthesizing chemical industry raw materials and fuel compositions - Google Patents

Method of synthesizing chemical industry raw materials and fuel compositions Download PDF

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US20090056204A1
US20090056204A1 US12/198,059 US19805908A US2009056204A1 US 20090056204 A1 US20090056204 A1 US 20090056204A1 US 19805908 A US19805908 A US 19805908A US 2009056204 A1 US2009056204 A1 US 2009056204A1
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alcohol
ethanol
carbon atoms
organic compounds
kinds
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Takashi Tsuchida
Shuji Sakuma
Tetsuya Yoshioka
Jun Kubo
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Sangi Co Ltd
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Sangi Co Ltd
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Assigned to KABUSHIKI KAISHA SANGI reassignment KABUSHIKI KAISHA SANGI ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SAKUMA, SHUJI, KUBO, JUN, TSUCHIDA, TAKASHI, YOSHIOKA, TETSUYA
Priority to US12/391,254 priority Critical patent/US8603201B2/en
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/02—Monohydroxylic acyclic alcohols
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
    • C07C29/32—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions without formation of -OH groups
    • C07C29/34—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring increasing the number of carbon atoms by reactions without formation of -OH groups by condensation involving hydroxy groups or the mineral ester groups derived therefrom, e.g. Guerbet reaction
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C31/00—Saturated compounds having hydroxy or O-metal groups bound to acyclic carbon atoms
    • C07C31/02—Monohydroxylic acyclic alcohols
    • C07C31/125—Monohydroxylic acyclic alcohols containing five to twenty-two carbon atoms
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only

Definitions

  • oxo process comprising synthesizing normal aldehyde by oxidation of normal paraffin and hydrogenating the obtained aldehyde is the mainstream of methods for synthesizing industrial linear alcohol.
  • a method using methanol (alcohol) and synthetic gas (carbon monoxide and hydrogen) as raw materials is known.
  • carbon monoxide which is harmful is used in the method and that it is a high-pressure reaction, the plant is of a large scale and the profitability is not good.
  • Ziegler method comprising oligomerizing ethylene by trialkylaluminum, forming a long-chain aluminum alkoxide by air-oxidation, and hydrolyzing the resultant to obtain a long-chain primary alcohol is used.
  • that method only alcohol having even numbers of carbon atoms having a distribution of 2-28 carbon atoms can be obtained.
  • a method for synthesizing 1-propanol from methanol and ethanol by Guerbet method has been proposed, while the yield is not good, as the reaction conditions are specific and thus not suitable for practical use.
  • alcohol is also synthesized from plants such as copra oil (oleochemical), while only alcohol having 8 or 16 carbon atoms can be obtained, and for alcohol having other numbers of atoms, it is necessary to depend on naphtha.
  • a method using ununiformed catalysts such as MgO can be exemplified (see nonpatent documents 1-5, patent documents 1-4), while these methods are not suitable for industrialization as they are many side reaction products, or the reaction conditions are specific.
  • a method for synthesizing butanol from ethanol a method using oxidative products of alkaline-earth metals as catalysts (see nonpatent document 6), a method using zeolite substituted with alkaline metal (see nonpatent document 7), a method using a mixture of metal oxidative products (see nonpatent document 8) can be exemplified.
  • Nonpatent document 1 Ueda, W.; Kuwabara, T.; Ohshida, T.; Morikawa, Y. A Low-pressure Guerbet Reaction over Magnesium Oxide Catalyst. J. Chem. Soc., Chem. Commun., 1990, 1558-1559.
  • Nonpatent document 2 Ueda, W.; Ohshida, T.; Kuwabara, T.; Morikawa, Y. Condensation of alcohol over solid-base catalyst to form higher alcohols. Catal. Letters, 1992, 12, 97-104.
  • Nonpatent document 3 Olson, E. S., Sharma, R. K. and Aulich T. R. Higher-Alcohols Biorefinery Improvement of Catalyst for Ethanol Conversion. Applied Biochemistry and Biotechnology, 2004, vol. 113-116, 913-932.
  • Nonpatent document 4 Burk, P. L.; Pruett, R. L. and Campo, K. S. The Rhodium-Promoted Guerbet Reaction Part 1. Higher Alcohols from Lower Alcohols. J. of Molecular Catalysis, 1985, 33, 1-14.
  • Nonpatent document 5 Knothe, G. Synthesis, applications, and characterization of Guerbet compounds and their derivatives. Lipid Technology, 2002, September, 101-104.
  • Nonpatent document 6 “Dimerisation of ethanol to butanol over solid-base catalysts” A. S, Ndou, N. plint, N. J. Coville, Applied catalysis A: General, 251, p. 337-345 (2003).
  • Nonpatent document 7 “Bimolecular Condensation of Ethanol to 1-Butanol Catalyzed by Alkali Cation Zeolites” C. Yang, Z. Meng, J. of Catalysis, 142, p. 37-44 (1993).
  • Nonpatent document 8 “Kinetics of a Complex Reaction System-Preparation of n-Butanol from Ethanol in One Step, V. NAGARAJAN, Indian Journal of Technology Vol. 9, October 1971, pp. 380-386
  • Nonpatent document 9 “Butadiene from ethyl alcohol” B. B. Corson, H. E. Jones, C. E. Welling, J. A. Hincley, and E. E. Stahly, Industrial and Engineering Chemistry, Vol. 42. No. 2.
  • Nonpatent document 10 One-Step Catalytic Conversion of Ethanol to Butadiene in the Fixed Bed. I. Single-Oxide Catalysis, S. K. Bhattacharyya and N. D. Ganguly, J. Appl. Chem., 12, March 1962.
  • Nonpatent document 11 One-Step Catalytic Conversion of Ethanol to Butadiene in the Fixed Bed. II. Binary- and Ternary-Oxide Catalysis, S. K. Bhattacharyya and N. D. Ganguly, J. Appl. Chem., 12, March 1962.
  • Patent document 1 U.S. Pat. No. 2,971,033
  • Patent document 2 U.S. Pat. No. 3,972,952
  • Patent document 3 U.S. Pat. No. 5,300,695
  • Patent document 4 U.S. Pat. No. 2,050,788
  • Patent document 5 Japanese Laid-Open Patent Application No. 57-102822
  • Patent document 6 Japanese Laid-Open Patent Application No. 58-59928
  • Patent document 7 WO99/38822
  • Patent document 8 WO2006/059729
  • the invention is a method for synthesizing 1 or more kinds of organic compounds comprising allowing 2 or more kinds of alcohols to contact hydroxyapatite (except those supporting metal catalysts or metal ion catalysts acting on alcohol).
  • at least 1 kind of alcohol is methanol or ethanol.
  • the method comprises allowing ethanol and linear alcohol other than ethanol to contact hydroxyapatite to synthesize a linear alcohol having 3 or more carbon atoms.
  • the linear alcohol other than ethanol is methanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, or unsaturated alcohols thereof.
  • the yield of the synthesized linear alcohol is 3 C-mol % or more.
  • the method comprises allowing methanol and alcohol having 3 or more carbon atoms to contact hydroxyapatite to synthesize branched-chain alcohol.
  • the alcohol having 3 or more carbon atoms is a linear alcohol.
  • the linear alcohol is 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, or unsaturated alcohols thereof.
  • the invention is a method for synthesizing 1 or more kinds of organic compounds, comprising allowing 1 kind of alcohols having 3 or more carbons to contact hydroxyapatite (except those supporting metal catalysts or metal ion catalysts acting on alcohol).
  • the alcohol having 3 or more carbon atoms is propanol, butanol, pentanol, hexanol, heptanol, octanol, or unsaturated alcohols thereof.
  • the synthesized organic compound is a fuel composition.
  • the reaction is conducted at 200-600° C.
  • the method comprises allowing ethanol and linear alcohol other than ethanol to contact hydrotalcite to synthesize a linear alcohol having 3 or more carbon atoms.
  • the linear alcohol other than ethanol is methanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, or unsaturated alcohols thereof.
  • FIG. 4 is a figure showing the results of measurement of the inner state of the reactor by in situ FT-IR after 1 hour of exposure to ethanol/He mixed gas, followed by 30 min of emission.
  • FIG. 5 is a figure showing the detailed results after 30 min of emission of FIG. 4 .
  • the present invention relates to a method for synthesizing an organic compound useful as a chemical industry raw material and fuel composition or a mixture thereof.
  • the object of the present invention is to provide a novel method for manufacturing various organic compounds from 2 or more kinds of alcohol or from 1 kind of alcohol having 3 or more carbon atoms. Particularly, it is to provide a method for synthesizing linear alcohol or branched-chain alcohol in good yield, by using 2 or more kinds of alcohols.
  • the present inventors made a study for manufacturing organic compounds to be used as a chemical industry raw material, and found out that by using hydroxyapatite or hydrotalcite as a catalyst, various organic compounds can be manufactured from 2 or more kinds of alcohol, or from 1 kind of alcohol having 3 or more carbon atoms. The present invention has been thus completed.
  • the present inventors made a keen study for synthesizing linear alcohols, under conditions that almost all of the alcohols synthesized by using alcohol raw material were branched-chain alcohols, and that it was estimated to be extremely difficult to synthesize linear alcohols. As a result, they found out that by allowing ethanol and linear alcohol other than ethanol to contact hydroxyapatite or hydrotalcite, a linear alcohol can be synthesized in good yield.
  • ethanol is synthesized through the conversion of sugars obtained from sugarcanes, beets, etc., by a fermentation method. Recently, a technique for synthesizing ethanol from biomass, agricultural and forestry residues, has been established, and a striking increase in the production of ethanol can be expected in future.
  • a branched-chain alcohol can be synthesized in good yield.
  • the present invention relates to (“1”) a method for synthesizing 1 or more kinds of organic compounds comprising allowing 2 or more kinds of alcohols to contact hydroxyapatite (except those supporting metal catalysts or metal ion catalysts acting on alcohol); (“2”) the method according to “1”, wherein at least 1 kind of alcohol is methanol or ethanol; (“3”) the method according to “1” or “2”, wherein a linear alcohol having 3 or more carbon atoms is synthesized by allowing ethanol and linear alcohol other than ethanol to contact hydroxyapatite; (“4”) the method according to “3”, wherein the linear alcohol other than ethanol is methanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, or unsaturated alcohols thereof; (“5”) the method according to “3” or “4”, wherein the yield of the synthesized linear alcohol is 3 C-mol % or more; (“6”)
  • the present invention relates to (“9”) a method for synthesizing 1 or more kinds of organic compounds, comprising allowing 1 kind of alcohols having 3 or more carbons to contact hydroxyapatite (except those supporting metal catalysts or metal ion catalysts acting on alcohol); (“10”) the method according to “9”, wherein the alcohol having 3 or more carbon atoms is propanol, butanol, pentanol, hexanol, heptanol, octanol, or unsaturated alcohols thereof; (“11”) the method according to “1”, “2”, “9” or “10”, wherein the synthesized organic compound is a fuel composition; (“12”) the method according to any one of “1” to “11”, wherein the reaction is conducted at 200-600° C.
  • the present invention relates to (“13”) a method for synthesizing 1 or more kinds of organic compounds comprising allowing 2 or more kinds of alcohol to contact hydrotalcite; (“14”) the method according to “13”, comprising allowing ethanol and linear alcohol other than ethanol to contact hydrotalcite to synthesize a linear alcohol having 3 or more carbon atoms; (“15”) the method according to “14”, wherein the linear alcohol other than ethanol is methanol, 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, or unsaturated alcohols thereof.
  • various organic compounds can be manufactured from 2 or more kinds of alcohols or from 1 kind of alcohol having 3 or more carbon atoms. Particularly, when using 2 or more kinds of alcohols, linear alcohol or branched-chain alcohol can be synthesized in good yield.
  • first synthesizing method it is not particularly limited as long as it is a method comprising allowing 2 or more kinds of alcohols to contact hydroxyapatite (except those supporting metal catalysts or metal ion catalysts acting on alcohol).
  • organic compounds synthesized by the method for synthesizing of the present invention include: paraffins, olefins, dienes, trienes, alcohols, ethers, ketones, aldehydes, and esters.
  • Specific examples include: ethane, ethylene, acetoaldehyde, propylene, propanol, acetone, butene, 1,3-butadiene, 1-butanol, 3-butene-1-ol, t-crotylalcohol, c-crotylalcohol, diethylether, butylaldehyde, 2-butanone, t-crotonealdehyde, c-crotonaldehyde, 1-pentanol, 2-pentanol, 2-pentanone, butylethylether, 1-hexanol, 2-ethyl-1-butanol, hexanal, 1-heptanol, 2-ethyl-1-propanol, octanol, 2-ethyl-1-hexanol, octanol, and nonanol.
  • These organic compounds having 2 or more carbon atoms can be used as a chemical industry raw
  • raw material alcohol used in the first synthesizing method of the present invention it is 2 or more kinds of alcohol, and it may be 2 kinds of alcohol, or 3 or more kinds of alcohol.
  • raw material alcohol may be a linear alcohol or branched-chain alcohol, and may be a saturated alcohol or unsaturated alcohol.
  • the number of carbon atoms is not particularly limited, but it is preferred to be an alcohol having 1-22 carbon atoms, from the point of view of easiness to obtain.
  • At least 1 kind of alcohol of the raw material alcohol is methanol or ethanol.
  • methanol or ethanol for at least 1 kind of alcohol, organic compounds can be synthesized in good yield.
  • a linear alcohol having 3 or more atoms in good yield is for example, 3 C-mol % or more, and preferably 5 C-mol % or more.
  • C-mol denotes the number of carbon atoms of the synthesized alcohol/the number of carbon atoms of raw material alcohol used.
  • the linear alcohol other than ethanol from the view point of easiness to obtain or cost, a saturated or unsaturated alcohol having 1-22 carbon atoms is preferred, and a saturated or unsaturated alcohol having 1-8 carbon atoms is more preferred.
  • the amount used (mixing ratio) of ethanol and linear alcohol other than ethanol is not particularly limited, while in order to synthesize linear alcohol more efficiently, it is preferred that the mixing ratio is approximately equimolar (about 1:0.9-1.1) when the conversion rates of the two alcohols are almost the same. When the conversion rates of the two alcohols are different, it is preferred to mix a larger amount of alcohol with the lower conversion rate.
  • ethanol and 1-propanol it is particularly preferred to use ethanol in an amount of about 0.9-1.1 (molar ratio) per 1 portion of 1-propanol.
  • a method comprising allowing methanol and alcohol having 3 or more carbon atoms to contact hydroxyapatite, it is possible to synthesize a branched-chain alcohol in good yield.
  • a saturated or unsaturated alcohol having 3-22 carbon atoms is preferred, and a saturated or unsaturated alcohol having 3-8 carbon atoms is more preferred.
  • Specific examples include propanol, butanol, pentanol, hexanol, heptanol, octanol, and unsaturated alcohol thereof.
  • linear alcohol is preferred, and specific examples include 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, and unsaturated alcohol thereof.
  • the amount used (mixing ratio) of methanol and alcohol having 3 or more carbon atoms is not particularly limited, while it is preferred to use 0.9 or more (molar ratio) of methanol per 1 alcohol having 3 or more carbon atoms, from the view point that a branched-chain alcohol is synthesized in good yield.
  • a method for synthesizing an organic compound of the present invention is not particularly limited as long as it is a method allowing 1 kind of alcohol having 3 or more carbon atoms to contact hydroxyapatite (except those supporting metal catalysts or metal ion catalysts acting on alcohol).
  • organic compounds synthesized by the synthesizing method of the present invention include, similarly as the above first synthesizing method, paraffins, olefins, dienes, trienes, alcohols, ethers, ketones, aldehydes, and esters.
  • each organic compound having 2 or more carbon atoms can be used as chemical industry raw material.
  • a mixture of organic compounds having 4 or more carbon atoms can be used as a fuel composition.
  • the above alcohol having 3 or more carbon atoms it may be a linear alcohol or branched-chain alcohol, and it may be a saturated alcohol or unsaturated alcohol. Further, the number of carbon atoms is not particularly limited, while from the view point of easiness to obtain or cost, a saturated or unsaturated alcohol having 3-22 carbon atoms is preferred, and a saturated or unsaturated alcohol having 3-8 carbon atoms is more preferred. Specific examples include propanol, butanol, pentanol, hexanol, heptanol, octanol, and unsaturated alcohol thereof. Among these, linear alcohol is preferred, and specific examples include 1-propanol, 1-butanol, 1-pentanol, 1-hexanol, 1-heptanol, 1-octanol, and unsaturated alcohol thereof.
  • Hydroxyapatite used in the synthesizing method of the present invention is one kind of calcium phosphate, and is generally indicated by the stoichiometric composition Ca 10 (PO 4 ) 6 (OH) 2 .
  • it can form an apatite structure, showing a property of hydroxyapatite, even it is a hydroxyapatite with a non-stoichiometric composition wherein the Ca/P molar ratio does not reach 1.67.
  • Such synthesized hydroxyapatite with a Ca/P molar ratio of approximately 1.4-1.8 is also encompassed within the hydroxyapatite of the present invention.
  • a hydroxyapatite with a Ca/P molar ratio of 1.60-1.80 is preferred.
  • the hydroxyapatite may be in any form including granule, sphere, pellet, and honeycomb.
  • hydroxyapatite used in the synthesizing method of the present invention does not encompass those supporting metal catalysts or metal ion catalysts acting on alcohol.
  • metal catalyst or metal ion catalyst acting on alcohol include metals or metal ions described in Japanese Laid-Open Patent Application No. 5-305238.
  • the hydroxyapatite used in the synthesizing method of the present invention may support in advance 1 kind of raw material alcohol such as methanol or ethanol.
  • 1 kind of raw material alcohol such as methanol or ethanol.
  • the absorption peak derived from alcohol of the alcohol-supported hydroxyapatite can be observed by infrared spectroscopy.
  • distribution of reaction products can be controlled. In other words, many products derived from supported alcohol can be synthesized.
  • the size, surface area, reaction conditions (contact time, reaction temperature, pressure, etc.) of granules used can be appropriately selected.
  • a reaction form in the present invention may be a batch method or a sequential method, while a continuous method is preferred from the view point of industrial economic efficiency.
  • a reactor in any form including a fixed bed, a moving bed, a fluidized bed or a slurry bed can be used.
  • it may be a liquid phase reaction or a gas phase reaction, and the reaction may be conducted at normal pressure, under pressure, or reduced pressure.
  • a mixed alcohol gas alone may be in contact with hydroxyapatite, or it may be in contact with hydroxyapatite together with an inert carrier gas such as nitrogen or helium.
  • the contact time of alcohol and hydroxyapatite affects also the reaction temperature.
  • the contact time is about 0.1-20 sec, and preferably about 0.4-5 sec.
  • the reaction temperature is generally 100-700° C., and preferably 200-600° C.
  • the reaction temperature is preferably 250-450° C., and more preferably 300-450° C.
  • the reaction temperature is preferably 250-500° C., and more preferably 300-450° C.
  • the vaporizing temperature a temperature that is higher than the boiling point of the alcohol having the higher boiling point, and at which the alcohol with the lower boiling point does not react is preferred.
  • the preferred temperature is, in case of methanol and ethanol, 150-200° C., and in case of ethanol and 1-octanol, 200-250° C.
  • 1 kind of alcohol having been vaporized may be firstly introduced to form a complex catalyst supporting alcohol, and then the other alcohol in form or liquid or gas may be introduced to start the reaction (liquid phase reaction, gas phase reaction).
  • methanol or ethanol it is preferred to firstly introduce methanol or ethanol having a low boiling point, and to form a complex catalyst supporting methanol or ethanol.
  • the order of alcohol to be introduced may be determined according to the boiling point as in the above, while when using ethanol, it is preferred to introduce ethanol in the first order.
  • a mixture of organic compounds thus obtained may be used as a fuel composition etc. directly in form of mixture.
  • a desired organic compound may be separated or purified according to a conventional separation or purification method, for example by rectification, microporous membrane separation, extraction, or adsorption.
  • a method for synthesizing an organic compound of the present invention (third synthesizing method), it is not particularly limited as long as it is a method allowing 2 or more kinds of alcohol to contact hydrotalcite.
  • Organic compounds synthesized by the synthesizing method of the present invention are similar to the above case using hydroxyapatite, and various organic compounds may be synthesized in good yield. Particularly, when ethanol and linear alcohol other than ethanol is used, a linear alcohol having 3 or more carbon atoms can be synthesized in good yield.
  • Hydrotalcite used in the present invention is a clay mineral having a composition of Mg 6 Al 2 (OH) 16 CO 3 .4H 2 O, Similarly to the above-mentioned hydroxyapatite, it may support alcohol beforehand.
  • Raw material alcohol or synthesizing method is similar to that of the above first or second synthesizing method, and thus the detailed explanation is abbreviated.
  • HAP1 denotes a hydroxyapatite which Ca/P molar ratio is 1.66
  • HAP2 denotes a hydroxyapatite which Ca/P molar ratio is 1.64
  • HAP3 denotes a hydroxyapatite which Ca/P molar ratio is 1.61.
  • MgO reagent (Wako Pure Chemicals) boiled and hydrated in distilled water (see Ueda, W.; Kuwabara, T.; Ohshida, T.; Morikawa, Y. A Low-pressure Guerbet Reaction over Magnesium Oxide Catalyst. J. Chem. Soc., Chem. Commun., 1990, 1558-1559), as for ZrO2, a reference catalyst of Catalyst (JRC-ZRO-5), and as for others, reagents from Wako Pure Chemicals were used, respectively.
  • a fixed bed gas flow catalytic reactor (Ohkura Riken) was used as a reactor. 0.2-4 cc of hydroxyapatite was filled in a silica reaction tube with a diameter of 5 mm.
  • thermal dehydration treatment was conducted for 30 min under a carrier gas atmosphere (1% Ar/He base; flow 112 ml/min) at 500° C.
  • mixed alcohol gas diluted with helium (alcohol concentration 20 vol %) was introduced so that GHSV becomes 500-10000 (1/h) to allow reaction at normal pressure.
  • a sampling was conducted every 50° C. from 100-500° C.
  • GC-MS gas chromatography mass spectrometer
  • FID gas chromatography
  • n-C denotes normal alcohol
  • b-C denotes branched chain alcohol
  • C ⁇ denotes unsaturated alcohol
  • Yield of linear alcohol in various combinations of raw material alcohol is shown in Table 4.
  • Yield of linear alcohol in Table 4 shows the yield of linear alcohol synthesized directly from 2 kinds of raw material alcohol. For example, when methanol (C1) and ethanol (C2) are used as raw materials, yield of 1-propanol is shown. When ethanol (C2) and 1-propanol (C3) are used as raw materials, yield of 1-pentanol (C5) is shown.
  • organic compounds useful as a chemical industry raw material can be synthesized in good yield.
  • organic compounds useful as a chemical industry raw material can be synthesized in good yield.
  • linear alcohol is synthesized in good yield.
  • methanol and alcohol having 3 or more carbon atoms are used, branched-chain alcohol is synthesized in good yield.
  • Ethanol and 1-propanol were used as raw material alcohols, and by changing the mixing ratio, reaction was conducted similarly as Example 1-1. Yield of alcohol against the reaction temperature is shown in FIGS. 1-3 .
  • organic compounds useful as a chemical industry raw material can be synthesized in good yield.
  • Hydrotalcite (Wako Pure Chemicals) was used as a catalyst.
  • organic compounds useful as a chemical industry raw material can be synthesized in good yield.
  • Hydroxyapatite (HAP1) was exposed to about 7 vol % ethanol/He mixed gas for 1 hour in a reactor, and then emission was conducted.
  • the inner state of the reactor after 1 hour of exposure to the mixed gas and the following 30 min of emission was measured by in situ FT-IR with a diffuse reflection method.
  • the results are shown in FIGS. 4 and 5 .
  • the upper spectrum shows the state after 1 hour exposure to the mixed gas
  • the lower spectrum shows the state after 30 min emission.
  • FIGS. 4 and 5 it can be observed that ethanol is absorbed and supported by hydroxyapatite.

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US20100275509A1 (en) * 2007-09-13 2010-11-04 Shuji Sakuma Method for producing composition using alcohol as starting material
US20130172634A1 (en) * 2010-09-15 2013-07-04 Kabushiki Kaisha Sangi Method for producing alcohol by guerbet reaction
US8962897B2 (en) 2012-12-19 2015-02-24 Celanese International Corporation Catalysts and processes for producing butanol
US9018426B1 (en) 2013-12-19 2015-04-28 Celanese International Corporation Processes for producing multi-carbon alcohols
US9024090B2 (en) 2012-12-19 2015-05-05 Celanese International Corporation Catalysts and processes for producing butanol
US20170327445A1 (en) * 2014-11-14 2017-11-16 Abengoa Bioenergia Nuevas Tecnologias, S.A. Process for the preparation of higher alcohols from ethanol and n-hexanol by guerbet condensation

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