JP6618805B2 - 脱カルボキシル化を使用したジオール類および他の化学物質を得る装置および方法 - Google Patents
脱カルボキシル化を使用したジオール類および他の化学物質を得る装置および方法 Download PDFInfo
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- JP6618805B2 JP6618805B2 JP2015561725A JP2015561725A JP6618805B2 JP 6618805 B2 JP6618805 B2 JP 6618805B2 JP 2015561725 A JP2015561725 A JP 2015561725A JP 2015561725 A JP2015561725 A JP 2015561725A JP 6618805 B2 JP6618805 B2 JP 6618805B2
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- JP
- Japan
- Prior art keywords
- carboxylic acid
- alkali metal
- anolyte
- decarboxylation
- reaction
- Prior art date
- 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.)
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- 238000000034 method Methods 0.000 title claims description 68
- 238000006114 decarboxylation reaction Methods 0.000 title claims description 47
- 150000002009 diols Chemical class 0.000 title claims description 37
- 239000000126 substance Substances 0.000 title description 9
- 150000001732 carboxylic acid derivatives Chemical class 0.000 claims description 65
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 49
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 42
- -1 alkali metal salt Chemical class 0.000 claims description 41
- 230000008569 process Effects 0.000 claims description 41
- 150000001993 dienes Chemical class 0.000 claims description 38
- 239000002904 solvent Substances 0.000 claims description 29
- KAKZBPTYRLMSJV-UHFFFAOYSA-N Butadiene Chemical group C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 claims description 28
- 125000000524 functional group Chemical group 0.000 claims description 27
- 239000012528 membrane Substances 0.000 claims description 25
- 229910052783 alkali metal Inorganic materials 0.000 claims description 24
- 239000002028 Biomass Substances 0.000 claims description 23
- LZCLXQDLBQLTDK-UHFFFAOYSA-N ethyl 2-hydroxypropanoate Chemical compound CCOC(=O)C(C)O LZCLXQDLBQLTDK-UHFFFAOYSA-N 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 17
- 239000011734 sodium Substances 0.000 claims description 16
- 159000000000 sodium salts Chemical class 0.000 claims description 16
- OWBTYPJTUOEWEK-UHFFFAOYSA-N butane-2,3-diol Chemical compound CC(O)C(C)O OWBTYPJTUOEWEK-UHFFFAOYSA-N 0.000 claims description 12
- NGSFWBMYFKHRBD-DKWTVANSSA-M sodium;(2s)-2-hydroxypropanoate Chemical compound [Na+].C[C@H](O)C([O-])=O NGSFWBMYFKHRBD-DKWTVANSSA-M 0.000 claims description 12
- 229940116333 ethyl lactate Drugs 0.000 claims description 10
- 150000003839 salts Chemical class 0.000 claims description 10
- 239000002585 base Substances 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 238000007127 saponification reaction Methods 0.000 claims description 7
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 6
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 6
- 150000001340 alkali metals Chemical class 0.000 claims description 6
- 150000001450 anions Chemical class 0.000 claims description 6
- 239000003495 polar organic solvent Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 5
- 239000002608 ionic liquid Substances 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical group C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 229910052744 lithium Inorganic materials 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 2
- 229910001413 alkali metal ion Inorganic materials 0.000 claims description 2
- BQJCRHHNABKAKU-KBQPJGBKSA-N morphine Chemical compound O([C@H]1[C@H](C=C[C@H]23)O)C4=C5[C@@]12CCN(C)[C@@H]3CC5=CC=C4O BQJCRHHNABKAKU-KBQPJGBKSA-N 0.000 claims description 2
- 229910052700 potassium Chemical group 0.000 claims description 2
- 239000011591 potassium Chemical group 0.000 claims description 2
- 230000000911 decarboxylating effect Effects 0.000 claims 1
- 239000000243 solution Substances 0.000 description 58
- 238000005868 electrolysis reaction Methods 0.000 description 36
- 238000006243 chemical reaction Methods 0.000 description 35
- 239000000047 product Substances 0.000 description 28
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 23
- 239000000463 material Substances 0.000 description 21
- 150000001875 compounds Chemical class 0.000 description 19
- 239000000178 monomer Substances 0.000 description 18
- 150000002500 ions Chemical class 0.000 description 16
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 16
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 15
- 125000001424 substituent group Chemical group 0.000 description 15
- 150000002430 hydrocarbons Chemical class 0.000 description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 13
- 229920001971 elastomer Polymers 0.000 description 13
- 229930195733 hydrocarbon Natural products 0.000 description 13
- 238000007254 oxidation reaction Methods 0.000 description 13
- 239000005060 rubber Substances 0.000 description 13
- 239000003513 alkali Substances 0.000 description 12
- 150000007942 carboxylates Chemical class 0.000 description 11
- 239000003792 electrolyte Substances 0.000 description 11
- ROWKJAVDOGWPAT-UHFFFAOYSA-N Acetoin Chemical compound CC(O)C(C)=O ROWKJAVDOGWPAT-UHFFFAOYSA-N 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- 239000002253 acid Substances 0.000 description 10
- 238000000855 fermentation Methods 0.000 description 10
- 230000004151 fermentation Effects 0.000 description 10
- 238000004817 gas chromatography Methods 0.000 description 10
- 150000001447 alkali salts Chemical class 0.000 description 9
- 230000003647 oxidation Effects 0.000 description 9
- 239000002994 raw material Substances 0.000 description 9
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 8
- 150000008044 alkali metal hydroxides Chemical class 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- WERYXYBDKMZEQL-UHFFFAOYSA-N butane-1,4-diol Chemical compound OCCCCO WERYXYBDKMZEQL-UHFFFAOYSA-N 0.000 description 8
- 238000005859 coupling reaction Methods 0.000 description 8
- 239000004310 lactic acid Substances 0.000 description 8
- 235000014655 lactic acid Nutrition 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 7
- 239000003208 petroleum Substances 0.000 description 7
- 239000004215 Carbon black (E152) Substances 0.000 description 6
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000008878 coupling Effects 0.000 description 6
- 238000010168 coupling process Methods 0.000 description 6
- 238000004821 distillation Methods 0.000 description 6
- 238000006612 Kolbe reaction Methods 0.000 description 5
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 description 5
- 150000001735 carboxylic acids Chemical class 0.000 description 5
- 238000010828 elution Methods 0.000 description 5
- GFAZHVHNLUBROE-UHFFFAOYSA-N hydroxymethyl propionaldehyde Natural products CCC(=O)CO GFAZHVHNLUBROE-UHFFFAOYSA-N 0.000 description 5
- 238000006386 neutralization reaction Methods 0.000 description 5
- 239000002243 precursor Substances 0.000 description 5
- 238000006722 reduction reaction Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- IKHGUXGNUITLKF-UHFFFAOYSA-N Acetaldehyde Chemical compound CC=O IKHGUXGNUITLKF-UHFFFAOYSA-N 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 229910001854 alkali hydroxide Inorganic materials 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000005587 bubbling Effects 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 4
- 230000003197 catalytic effect Effects 0.000 description 4
- 235000013373 food additive Nutrition 0.000 description 4
- 239000002778 food additive Substances 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 150000002894 organic compounds Chemical class 0.000 description 4
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 4
- AVXDKPABPXSLIZ-UHFFFAOYSA-M sodium;3-hydroxypropanoate Chemical compound [Na+].OCCC([O-])=O AVXDKPABPXSLIZ-UHFFFAOYSA-M 0.000 description 4
- 239000007858 starting material Substances 0.000 description 4
- CYDQOEWLBCCFJZ-UHFFFAOYSA-N 4-(4-fluorophenyl)oxane-4-carboxylic acid Chemical compound C=1C=C(F)C=CC=1C1(C(=O)O)CCOCC1 CYDQOEWLBCCFJZ-UHFFFAOYSA-N 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 3
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 3
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 3
- 238000006576 Kolbe electrolysis reaction Methods 0.000 description 3
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 3
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 description 3
- 238000009835 boiling Methods 0.000 description 3
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- 150000001720 carbohydrates Chemical class 0.000 description 3
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- 238000006356 dehydrogenation reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
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- 239000008103 glucose Substances 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 238000005935 nucleophilic addition reaction Methods 0.000 description 3
- 239000002244 precipitate Substances 0.000 description 3
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- 229910001415 sodium ion Inorganic materials 0.000 description 3
- 239000001540 sodium lactate Substances 0.000 description 3
- 235000011088 sodium lactate Nutrition 0.000 description 3
- 229940005581 sodium lactate Drugs 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 239000003115 supporting electrolyte Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
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- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 description 2
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- WXBOMIKEWRRKBB-UHFFFAOYSA-N rhenium(iv) oxide Chemical compound O=[Re]=O WXBOMIKEWRRKBB-UHFFFAOYSA-N 0.000 description 1
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- WGHUNMFFLAMBJD-UHFFFAOYSA-M tetraethylazanium;perchlorate Chemical compound [O-]Cl(=O)(=O)=O.CC[N+](CC)(CC)CC WGHUNMFFLAMBJD-UHFFFAOYSA-M 0.000 description 1
- ZCWKIFAQRXNZCH-UHFFFAOYSA-M tetramethylazanium;perchlorate Chemical compound C[N+](C)(C)C.[O-]Cl(=O)(=O)=O ZCWKIFAQRXNZCH-UHFFFAOYSA-M 0.000 description 1
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- C25B13/00—Diaphragms; Spacing elements
- C25B13/02—Diaphragms; Spacing elements characterised by shape or form
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- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
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- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
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Description
RCO2H+MOH→RCO2M+H2O
“R”は有機部分を表し、Mは例えばナトリウム、リチウム等のアルカリ金属である。
2RCO2M→R−R+CO2+2e−+2M+
“R”は有機部分を表し、Mは例えばナトリウム、リチウム等のアルカリ金属である。
2RCO2M→2RCOH+2CO2+2e−+2M+
RCO2Na→R・+CO2+Na++e−
ラジカル(R−)が形成されると、電極界面において他の化学種と反応し、もし、同じカルボン酸塩アニオンの他のラジカルと反応すれば、ホモカップリング生成物となる。
R・+R・→R−R
結合生成物は、少なくとも2つの酸素を含む官能基を有する対称化合物である。この生成物は、それ自身、例えば溶媒などとして興味のある化学物質であり、また、興味のある化学物質に変換することも出来る。例えば、官能基は二重結合に変換され、ジエンはゴム材料の製造のためのモノマーとして使用できる。もし、ラジカルが異なるカルボン酸塩アニオンと結合した場合、ヘテロカップリング生成物が形成され、非対称化合物が得られる。
RCH2C(Y)H・ → RCH2CH=Y + H・
RCH2C(Y)H・ → RCH2RYH+ + e−
RCH2RYH+ + OH− → RCH=RHY + H2O
これらの反応で、Yはカルボキシル基のα位における電子供与基を示す。これらの反応で形成される化合物は、それら自身に興味が持たれるだけでなく、更なる工程に伴う興味深い化合物に変換できる。その反応経路は限定されないが、上述の反応生成物は、例えばジオールに変換され、次いでジエンに変換される。これらの更なる化学工程を以下に示すが、これには限定されない。
本発明の電気化学的脱カルボキシル化プロセスが使用して、水酸基を有するカルボン酸のナトリウム塩をジオールに変換した。製造されたジオールは溶媒として使用することも出来、また、更にジエンに変換することも出来る。この脱カルボキシル化のための陽極液はメタノール中ナトリウム3−ヒドロキシプロピオネート10重量%から成り、これは、酸をメタノール中に溶かし、過剰のNaOHペレットを添加して調製した。10重量%水酸化ナトリウム水溶液が陰極液として使用された。
C(OH)H2CH2CO2Na→C(OH)H2CH2・+CO2+Na++e−
H2O + e− → H2 + OH−
2C(OH)H2CH2・ → C(OH)H2CH2CH2C(OH)H2
2C(OH)H2CH2・ → C(OH)H2CH2CH2C(OH)H2
本発明の他の実施例として、水酸基を有する異なるカルボン酸が複数の酸素を含む官能基を有する化合物に変換された。製造された化合物は食品添加物として使用でき、又ジオールに変換でき、さらに必要であればジエンに変換できる。この脱カルボキシル化の陽極液は、乳酸ナトリウムの10重量%メタノール溶液から成り、これは乳酸をメタノールに溶解し、次いで過剰のNaOHペレットを添加して調製した。陰極液としては、10重量%水酸化ナトリウム水溶液を使用した。
CH3C(OH)HCO2Na → CH3C(OH)H・+CO2+Na++e−
H2O + e− → H2 + OH−
H3C(OH)H・→CH3C(OH)H++e−+OH−→CH2C(OH)H
2CH3CHO + NaOH → CH3COC(OH)HCH3 + NaOH
本発明の他の実施例として、実施例2で使用したものと同じカルボン酸を直接ジオールに変換した。製造されたジオールは溶媒として利用でき、更にジエンに変換できる。この実施例の陽極液はL−乳酸ナトリウム塩の20重量%メタノール溶液から成り、L−乳酸ナトリウム塩(98%、Sigma)を直接メタノールに溶解させて調製した。陰極液としては、10重量%水酸化ナトリウム水溶液を使用した。
CH3C(OH)HCO2Na → CH2C(OH)H・+CO2+Na++e−
H2O + e− → H2 + OH−
2CH3C(OH)H・ → CH3C(OH)HC(OH)HCH3
本発明の他の実施例として、実施例2及び3で使用したものと同じカルボン酸を異なる溶媒を用いて直接ジオールに変換した。この脱カルボキシル化の陽極液はL−乳酸ナトリウム塩の20重量%乳酸エチル溶液から成り、L−乳酸ナトリウム塩(98%、Sigma)を直接乳酸エチルに溶解させて調製した。陰極液としては、10重量%水酸化ナトリウム水溶液を使用した。
CH3C(OH)HCO2Na → CH2C(OH)H・+CO2+Na++e−
H2O + e− → H2 + OH−
2CH3C(OH)H・→CH3C(OH)HC(OH)HCH3
Claims (14)
- カルボン酸部分に加えて少なくとも1つのOH官能基を有するカルボン酸のアルカリ金属塩を得る工程と、カルボン酸のアルカリ金属塩を電気化学的に脱カルボキシル化してアルキルラジカルを得、当該アルキルラジカルは反応してラジカル結合生成物であるジオールを形成する電気化学的脱カルボキシル化工程と、得られたジオールを脱水化してジエンを形成する脱水化工程とから成るジエンの電気化学的製造方法であって、カルボン酸のアルカリ金属塩が、カルボン酸部分に加えて少なくとも1つのOH官能基をカルボン酸部分に対してα位の位置に有することを特徴とするラジカル結合生成物の電気化学的製造方法。
- カルボン酸のアルカリ金属塩が、MOH又はMOR(ただし、Mはアルカリ金属を示し、OHは水酸化物アニオンを示し、ORはアルコキシドアニオンを示す)の式で示される塩基を使用した鹸化反応を経て形成される請求項1に記載の方法。
- 塩基が脱カルボキシル化の一部として再形成され、回収され、更なる鹸化反応に再使用される請求項2に記載の方法。
- カルボン酸のアルカリ金属塩がバイオマスから得られる請求項1に記載の方法。
- アルカリ金属Mがナトリウム、リチウム又はカリウムである請求項2に記載の方法。
- 塩基が、水酸化リチウム、水酸化ナトリウム及び水酸化カリウムから成る群より選択される請求項2に記載の方法。
- カルボン酸のアルカリ金属塩がカルボン酸のナトリウム塩である請求項1に記載の方法。
- 電気化学的脱カルボキシル化工程が、陽極液室と陰極液室とから成る2室電気化学的セルを使用して行われる請求項1に記載の方法。
- 陽極液室が、カルボン酸のアルカリ金属塩と溶媒とから成る陽極液を有する請求項8に記載の方法。
- 溶媒が極性有機溶媒またはイオン性液体である請求項9に記載の方法。
- 溶媒が、酸化されるべきカルボン酸塩アニオンの溶融塩である請求項9に記載の方法。
- 電気化学的セルが、更にアルカリ金属イオン選択膜を有する請求項8に記載の方法。
- 陽極液が、L−乳酸ナトリウムのメタノール溶液または乳酸エチル溶液から成る請求項9に記載の方法。
- ジオールが、2,3−ブタンジオールであり、ジエンが1,3−ブタジエンである請求項1に記載の方法。
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