CN102161918A - 5-烷氧基甲基糠醛醚的用途 - Google Patents
5-烷氧基甲基糠醛醚的用途 Download PDFInfo
- Publication number
- CN102161918A CN102161918A CN2011100624213A CN201110062421A CN102161918A CN 102161918 A CN102161918 A CN 102161918A CN 2011100624213 A CN2011100624213 A CN 2011100624213A CN 201110062421 A CN201110062421 A CN 201110062421A CN 102161918 A CN102161918 A CN 102161918A
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- Prior art keywords
- acid
- hmf
- glucose
- catalyzer
- ether
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- 229910052726 zirconium Inorganic materials 0.000 description 1
- 229910000166 zirconium phosphate Inorganic materials 0.000 description 1
- LEHFSLREWWMLPU-UHFFFAOYSA-B zirconium(4+);tetraphosphate Chemical compound [Zr+4].[Zr+4].[Zr+4].[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O.[O-]P([O-])([O-])=O LEHFSLREWWMLPU-UHFFFAOYSA-B 0.000 description 1
- IPCAPQRVQMIMAN-UHFFFAOYSA-L zirconyl chloride Chemical compound Cl[Zr](Cl)=O IPCAPQRVQMIMAN-UHFFFAOYSA-L 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/38—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with substituted hydrocarbon radicals attached to ring carbon atoms
- C07D307/40—Radicals substituted by oxygen atoms
- C07D307/46—Doubly bound oxygen atoms, or two oxygen atoms singly bound to the same carbon atom
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- Y02P20/10—Process efficiency
Abstract
本发明涉及5-烷氧基甲基糠醛醚的用途。涉及5-羟甲基糠醛醚作为燃料或者燃料添加剂的用途。优选所述醚为5-甲氧基甲基糠醛或5-乙氧基甲基糠醛。
Description
本申请是国际申请日为2007年3月12日，国际申请号为PCT/EP2007/002145，名称为“5-烷氧基甲基糠醛醚的合成方法及其用途”的中国专利申请No.200780008355.3的分案申请。
技术领域
本发明涉及制备5-羟甲基糠醛(HMF)衍生物、特别是HMF的醚衍生物、更特别的是5-烷氧基甲基糠醛醚的方法，并涉及它们作为燃料或燃料添加剂的用途。
背景技术
人们对糖或含有糖(己糖)的生物质向更经济有益化合物的转化具有日益增长的兴趣。当前燃料领域主要致力于由糖/葡萄糖得到乙醇。一般地，蔗糖和葡萄糖发酵生成乙醇。一个葡萄糖分子被转变为两分子乙醇和两分子CO2。这种转化具有一定的缺陷，特别是考虑到原子经济性、乙醇的低能量密度(7.7kWh/kg或6.1kWh/L)和其相对低的沸点(78.4摄氏度)。
另一个应用领域涉及在酸性催化剂存在下将糖例如果糖转化为HMF，且已有文献报道(例如在Suedzucker的EP0230250中或者在CEA的EP0561928中)。在这种情况下，HMF作为颇具潜力的用于获得生物基单体例如呋喃二羧酸的原材料被获得，其尤其可以被用作作为聚乙烯对苯二酸酯型聚酯单体的对苯二甲酸的替代物(Moreau等，Topics in Catalysis Vol 27，Nos.1-4，2004，11-30以及其中引用的参考文献)。当在这些条件下蔗糖或葡萄糖被用作原料时，未观察到其转化为HMF(Moreau等，Topics in Catalysis Vol 27，Nos.1-4，2004，p13，第2栏，第2-3行)，这与低价和具有丰富可用性的蔗糖和葡萄糖相比，具有明显的缺点。只有在DMSO、DMF和DMA存在下(从葡萄糖获得低HMF收率：Ishida等，Bull.Chem.Soc.Jpn 742001，1145)或者在丙酮和水的次临界和超临界混合物中(果糖、葡萄糖、蔗糖和菊糖分别以77％、、48％、56％和78％的收率转化为HMF：Vogel等，GreenChemistry 5，2003，280)可以从除了果糖之外的原材料获得合理的HMF收率。
在当前的市场情况下，果糖作为原料与葡萄糖和/或蔗糖相比，由于其高价格并不受欢迎。因此，迄今为止，尚未开发出工业规模合成HMF的方法。
在Lewkowski，ARKIVOC 2001，(i)17-54；Gandini，Prog.Polym.Sci.22，1997，1203；Lichtenthaler，C.R.Chimie，7，2004，65和Acc.Chem.Res.35，2002，728；和Moreau，Topics in Catalysis，27，2004，11中，大量综述了HMF的合成化学和应用。
DE3621517涉及由纤维素或木质纤维素或者淀粉和醇合成烷氧基甲基糠醛和烷基乙酰丙酸的方法。主要在170摄氏度至225摄氏度下加热原材料(1至60分钟)，并加入强催化作用的酸，如果合适，进一步在压力装置中加入惰性溶剂。可以使用的醇为脂族伯醇或酯族仲醇，优选甲醇或者乙醇。所用强酸优选浓度为0.5至10％(以醇计)的硫酸，如果合适，加入金属卤化物。木质纤维素基原材料和废物质，例如木材，木浆(纤维素)，废纸，秸秆，蔗渣等，因而能被转化为可提取的和可蒸馏得到的有机中间体。德国专利参考文献JOURNAL OF WOODCHEMISTRY AND TECHNOLOGY，MARCEL DEKKER，NEWYORK，NY，US-ISSN 0277-3813，Vol：8，Nr.1，121-134页(1988)的发明人提供了相似的信息。另一方面，该方法主要生成了烷基乙酰丙酸；采用硫酸(非固体)制备HMF醚是相当差的(在Garves的科技论文中，在DE621517的11个实施例中所报道的HMF-醚的最大收率为5.3％和2.7％)。
DE635783描述了制备烷氧基甲基糠醛和烷基乙酰丙酸酯的方法。所用酸为气态盐酸，非固体催化剂。如这篇德国专利的实施例中所述，由葡萄糖，蔗糖或者淀粉制得的产物大部分为烷基乙酰丙酸酯(所报道的EMF醚的最大收率为6.4％)。
Tyrlik等人在CARBOHYDRATE RESEARCH，ELSEVIERSCIENTIFIC PUBLISHING COMPANY.AMSTERDAM，NL-ISSN0008-6215，315卷，Nr.3-4，268-272页(1999)中描述了“Selectivedehydration of glucose to hydroxymethylfurfural and a one-pot synthesis ofa 4-acetylbutyrolactone from glucose and trioxane in solutions ofaluminium salts”。在这篇文章中所示反应条件下的酸性催化剂为均相催化剂。烷氧基甲基糠醛的收率相当差(HMF+结合的HMF醚的最大收率为14％)。
Moye等人在JOURNAL OF APPLIED CHEMISTRY，SOCIETY OFCHEMICAL INDUSTRY.LONDON，GB，16卷，Nr.7，206-208页(1966)中描述了“Reaction of ketohexoses with acid in certain non-aqueous sugarslovents”。HMF采用多种酸性催化剂由果糖，山梨糖，蔗果三糖，菊糖(一组基于果糖和终端为葡萄糖基的多糖)制得。没有进行葡萄糖的实验。所报道的由果糖制得HMF的收率(参见其表I)看起来是高的，但是不涉及分离的HMF，而是基于UV分析计算的值。5-羟甲基糠醛醚的收率是未知的，暗示了糠醛醇对于酸是非常不稳定的，在室温下易于聚合，因此非常明显的是，该醚的产率是相当无意义的。
Tarabanko等人在“Khimiya Rastitel′nogo Syrya(2004)，(2)，31-37”出版的论文“Preparation of butyl levulinate by the acid-catalyzedconversion of sucrose in the presence o butanol”中，研究了在两相水-丁醇体系中酸性催化剂转化蔗糖的脉动流法。采用硫酸和硫酸氢钠的溶液作为催化剂，得到的主要产物是5-HMF和乙酰丙酸。没有公开葡萄糖向烷氧基甲基糠醛的转化。在相同作者出版在“Khimiya Rastitel′nogoSyrya(2002)，(2)，5-15”的第二篇文章“Catalyzed carbohydrate dehydrationin the presence of butanol at moderate temperatures”中可以得出相似的结论。
RU2203279涉及由蔗糖合成5-羟甲基糠醛醚。通过在常压下两相体系中蔗糖或果糖的脱水合成最终产品，并存在亚硫酸氢钠或者亚硫酸氢钠和硫酸的混合物作为催化剂，以及存在脂肪醇作为烷化剂。在两相体系中，这些催化剂是均相的。该方法的另一区别特征在于使用蔗糖或者果糖作为母试剂。
最后，WO9967409涉及“METHOD OF TREATING BIOMASSMATERIAL”，其中在单阶段蒸煮器中，在高于200摄氏度的温度下，停留时间为小于10分钟，通过使用稀释的矿物酸例如硫酸或者硝酸使生物质材料中的半纤维素和纤维素组分水解。半纤维素组分被转变为选自戊糖和己糖的单糖，纤维素组分被转变为葡萄糖。此外，生成有机酸，糠醛，5-羟甲基糠醛，酸溶性木质素，乙酰丙酸及其他产物。所用酸为硫酸或者硝酸，作为稀释水溶液，即均相催化剂。产物流为C6和C5糖以及糠醛，HMF，乙酰丙酸，ASL和其他提取有机物中的一种。没有公开HMF烷氧醚的制备。
可以得出结论，目前合成HMF的方法主要以果糖为起始原料并且一般没有给出高收率，这部分可归因于HMF在酸性反应条件下的不稳定性。在大部分酸催化的水基反应中，已经报道了进一步反应生成乙酰丙酸和胡敏素，这使其成为吸引力较差的可选方案。
本发明已着手克服这些缺点。
令人惊奇的是，本发明人现已发现含己糖原材料的转化，特别是含果糖和/或葡萄糖原材料以及更特别是可能来源于生物质的含葡萄糖材料的转化，在催化剂量或者次化学计量(sub-stoechiometric)酸的存在下、在醇存在下、有或无一种或多种另外的稀释剂存在下，导致以良好的收率和选择性形成相应的HMF-醚。
发明内容
因此，本发明涉及通过果糖和/或含葡萄糖原材料与醇在催化剂量或次化学计量酸性催化剂存在下反应制造5-烷氧基甲基糠醛醚的方法。
已经发现，HMF的这种原位形成和衍生防止了向前生成上述乙酰丙酸和胡敏素的不希望的反应，从而导致高效的将含果糖和/或葡萄糖材料转化成HMF衍生物的过程。
可以计算5-乙氧基甲基糠醛(EMF)，由HMF与(生物)乙醇反应生成的醚的能量密度。考虑到化学计量(stoeichiometry)和使用生长量表计算的502.32千焦/摩尔生成热焓，反应焓可以计算为3854.76千焦/摩尔，导致能量密度为7.0kWh/kg或8.7kWh/L。这实际上相当于普通汽油(12.7kWh/kg，8.8kWh/L)和柴油(11.7kWh/kg，9.7kWh/L)，并显著高于乙醇(7.7kWh/kg，6.1kWh/L)。EMF的这种高能量密度，目前可以以高收率、在一步中、由非常便宜的己糖或含己糖原材料(例如蔗糖和葡萄糖)获得HMF衍生物的事实，以及这些醚与HMF相比在室温下是液体，使其成为非常引人关注的燃料或燃料添加剂。
在某些具体实施方案中，醇选自(无)支链的脂族伯醇。在某些优选具体实施方案中，醇选自C1-C5(无)支链的脂族伯醇，优选甲醇、乙醇、1-丙醇、2-羟甲基-丙醇、1-丁醇。更优选甲醇和/或乙醇。所得(甲)乙醚((甲)乙氧基甲基糠醛，MMF或EMF)具有高内能并可以直接用作作为MTBE替换物的燃料添加剂或者作为燃料。还可以使用醇的混合物。本发明方法中乙醇为最优选的醇，因为使用的乙醇还可以源自生物质或含葡萄糖材料(生物乙醇)。
本发明的方法中的酸性催化剂可以选自固体(卤化)有机酸、无机酸、盐、路易斯酸、离子交换树脂和沸石或者它们的组合和/或其混合物。此处所用表达“固体”具有该词的通常含义，即在反应过程中为固体。酸可以是质子酸、布朗斯特酸，或者替代地，路易斯酸。在某些具体实施方案中，酸可以是有机酸或者无机酸。在某些具体实施方案中，有机酸可以选自草酸、乙酰丙酸、马来酸或者对甲苯磺酸。在某些具体实施方案中，无机酸可以选自磷酸、硫酸、盐酸、氢溴酸、硝酸、氢碘酸，任选地为原位生成的。在某些具体实施方案中，无机酸选自硫酸、磷酸、盐酸、硝酸。在某些具体实施方案中，盐可以是(NH4)2SO4/SO3、磷酸铵、三乙胺磷酸盐，吡啶盐，吡啶磷酸盐、吡啶盐酸盐/氢溴酸盐/过溴酸盐，DMAP，铝盐，Th和Zr离子，磷酸锆，Cr-、Al-、Ti-、Ca-、In-离子、ZrOCl2、VO(SO4)2、TiO2、V-紫菜碱、Zr-、Cr-、Ti-紫菜碱中的一种。在某些具体实施方案中，路易斯酸可以是ZnCl2、AlCl3、BF3中的一种。在某些具体实施方案中，离子交换树脂可以是Amberlite、Diaion、levatit中的一种。在某些具体实施方案中，优选的酸性催化剂是固体催化剂，可选自酸性树脂、天然粘土矿物质、沸石、负载型酸(例如用无机酸浸渍的二氧化硅)、热处理过的木炭、金属氧化物、金属硫化物、金属盐和混合氧化物及它们的混合物。在某些具体实施方案中，可以使用酸性催化剂的混合物或组合物。
进行反应的温度可以变化，但是通常优选在50至300摄氏度下进行反应，优选125至250摄氏度，更优选175至225摄氏度。通常地，较少选择高于300的温度，这是由于反应的选择性，会生成很多副产物，尤其是糖的焦糖化。由于反应速度缓慢，还较少选择在最低温度以下进行反应。
果糖和/或含葡萄糖原材料可以选自多种原料。通常任何具有足够高果糖或葡萄糖含量的原料都可以使用。优选地，果糖和/或含葡萄糖原材料选自淀粉、多糖、半乳糖，纤维素、半纤维素、含葡萄糖二糖例如蔗糖、麦芽糖、纤维二糖、乳糖，优选含葡萄糖二糖，更优选蔗糖或葡萄糖。
向反应混合物中加入的催化剂量，以含果糖和/或葡萄糖起始原料的果糖或葡萄糖含量计，可以为0.01至40摩尔％，优选0.1至30摩尔％，更优选1至20摩尔％。
在某些具体实施方案中，可以加入一种或多种溶剂或者稀释剂，通常用于帮助含葡萄糖材料的溶解或者作为稀释剂。溶剂可以选自水，亚砜，优选DMSO，酮，优选甲乙酮、甲基异丁基酮和丙酮或者上述两种或更多溶剂的混合物。
在某些具体实施方案中，醇/溶剂的比为50至0.1，优选20至1，更优选10至2。
由于有限的溶解度(因此原材料的可用性)，较大量的醇可以导致反应太过缓慢，然而体系中太多的溶剂可能导致太过稀释，其在两种情况下都是较少优选的结果。可能的溶剂之一是水。
在某些具体实施方案中，所述方法可以在连续流动过程中进行。在这种方法中，反应物在流动过程中的停留时间为0.1秒至10小时，优选1秒至5小时，更优选1分钟至1小时。
在某些具体实施方案中，连续流动过程为固定床连续流动过程或者使用优选多相酸性催化剂的反应(催化)精馏过程。为了激发或者再生多相酸性催化剂或者改善性能，可以向固定床或者反应精馏连续流动过程的原料中加入无机酸或者有机酸。在固定床过程中，液时空速(LHSV)可以为1至1000，优选5至500，更优选10至250，最优选25至100。
如上所阐明的，本发明方法所得产物的应用，即醚，可用作燃料或燃料添加剂以及用于制造2，5-二(羟甲基)呋喃、呋喃-2，5-二羧酸、2-羟甲基呋喃-5-羧酸、2，5-(二羟甲基)四氢呋喃的前体，其可以被用作聚合反应过程中的单体，任选在二醇转化为二胺之后。参见Moreau的综述，Topics in catalysis，2004，27，11-30。
附图说明
图1a为呋喃衍生物的转化率与空速的关系图，图1b为呋喃衍生物的选择性与空速的关系图，且在180℃，采用多相催化剂，反应介质为水。催化剂1：□；催化剂2：■；催化剂3：*；催化剂4：●。
图2a为呋喃衍生物的转化率与空速的关系图，图2b为呋喃衍生物的选择性与空速的关系图，且在180℃，采用多相催化剂，反应介质为88.7％乙醇。催化剂1：□；催化剂2：■；催化剂3：*；催化剂4：●。
具体实施方式
仪器
连续并流反应器系统的组成为四个石英反应器，其中插入银加热块；温度和流量调节器以及三个HPLC泵。其中两个泵输送液体到反应器，第三个泵用于在收集前稀释反应产物。
分析方法
借助于采用内标(糖二酰胺，Sigma Aldrich)的HPLC-分析法定量测定反应产物。使用装备有UV和RI检测器的Merck-Hitachi L7000色谱仪。固定相为反相C18(Sunfire 3.5μm，4.6x100mm，Waters)，阳离子交换(SupelcogelH，4.6x300mm，SigmaAldrich)柱串联连接。在恒流0.6ml/min和60℃下，根据下列方案使用梯度洗脱。
| 时间(min) | 0.2％TFA(aq) | 甲醇 | 乙腈 |
| 0 | 90.0 | 7.0 | 3.0 |
| 10 | 90.0 | 7.0 | 3.0 |
| 11 | 80.0 | 0.0 | 20.0 |
| 15 | 80.0 | 0.0 | 20.0 |
| 16 | 90.0 | 7.0 | 3.0 |
| 21 | 90.0 | 7.0 | 3.0 |
一般过程
1.25重量％的葡萄糖(99.7％Sigma Aldrich)水溶液或者88.7％乙醇溶液在180℃下流过多相催化剂固定床(200μl)。选择能够获得0.25或者0.5min-1空速的流量，即接触时间2或4min。用水和乙醇的混合物(50∶50)稀释从反应器出来的液体从而避免管道堵塞。
测试的催化剂：
催化剂1沸石βSAR25(CBV Zeolyst)
催化剂2沸石Y高SAR(CBV Zeolyst)
催化剂5丝光沸石H SAR 90(CBV Zeolyst)
催化剂7沸石Y SAR 5.17(CBV Zeolyst)
按照下述公式计算接触时间和空速：
Sv＝Fr原料/V催化剂
Sv空速(min-1)
Fr原料原料流速(ml/min)/
V催化剂催化剂量(ml)
tc＝1/Sv
tc接触时间(min)
根据下列公式计算底物转化率、呋喃衍生物的选择性和收率：
X＝100*mr底物/m0底物
X转化率(％)
mr底物反应的底物的量(mg)
m0底物原料中底物的量(mg)
S化合物＝100*nr底物/n0底物
S化合物化合物的选择性(％)
nr底物反应的底物的摩尔数
n0底物原料中底物的摩尔数
收率＝100*n产物/n0底物
收率 收率(％)
n产物形成的产物的摩尔数
测试的催化剂：
催化剂1沸石βSAR25(CBV Zeolyst)
催化剂2沸石Y高SAR(CBV Zeolyst)
催化剂3丝光沸石H SAR 90(CBV Zeolyst)
催化剂4沸石Y SAR 5.17(CBV Zeolyst)
在水中的反应
图1a和1b显示了测试催化剂获得的转化率为76％(沸石β)。这种催化剂产生了7％的HMF和EMF选择性。
具有高SAR的沸石Y在20％转化率下表现出9％的呋喃选择性。具有低SAR的Y沸石(催化剂4)在非常低的转化率下显示出4％的选择性。丝光沸石表现出对呋喃衍生物的降低的活性和选择性。
HMF是在反应混合物中发现的主要呋喃。
在乙醇中的反应
在低空速和17％转化率下，使用沸石β获得大约4％的HMF和EMF选择性。对于测试的其他催化剂，转化率最初增至大于20％，并且选择性在1至3％。
主要的呋喃衍生物是所需的EMF。
使用固体酸性催化剂1的果糖+乙醇数据
果糖浓度55.5mmol/L；90％乙醇
使用固体酸性催化剂1的葡萄糖+乙醇数据
葡萄糖浓度55.5mmol/L；90％乙醇
使用固体酸性催化剂1的蔗糖+乙醇数据
蔗糖浓度27.8mmol/L；(55.5mmol/L C6H12O6)；90％乙醇
发动机试验
在小型模型柴油发动机上，用常见的作为燃料的商用柴油进行对比试验，向相同的商用柴油中分别加入1重量％、2重量％、3重量％、5重量％和10重量％的HMF或EMF样品。目检含有HMF的柴油样品，其均匀性较差(残存可见固体颗粒，絮凝)，且HMF在5重量％以上时，有时可见固体沉淀。以液体加入EMF，未产生任何混合或者絮凝问题。发动机固定使用一定量(100mL)的燃料运转，直到燃料消耗殆尽。含有HMF的燃料运转规则性较差，而含有EMF的燃料则以规则的速度运行，且运行时间较长(至多15％)。通过对发动机的目测检查，EMF提供了较少的可见污染。
Claims (3)
1.5-羟甲基糠醛醚作为燃料或者燃料添加剂的用途。
2.根据权利要求1所述的用途，其中所述醚为5-烷氧基甲基糠醛。
3.根据权利要求2所述的用途，其中所述醚为5-甲氧基甲基糠醛或5-乙氧基甲基糠醛。
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| CN111057594B (zh) * | 2019-12-30 | 2021-10-29 | 李旭 | 一种醇基燃料添加剂的制备方法 |
| US11708343B2 (en) | 2021-07-16 | 2023-07-25 | Kse, Inc. | Method and integrated process for the carboxylation of furan derived carboxylic acids to 2,5-furandicarboxylic acid |
| WO2023066577A1 (en) | 2021-10-21 | 2023-04-27 | Furanix Technologies B.V. | Process for the preparation of a furfural derivative |
| FR3131312A1 (fr) | 2021-12-23 | 2023-06-30 | IFP Energies Nouvelles | Procédé de production d’une solution aqueuse de 2,5-diformylfurane (DFF) de pureté élevée |
| FR3131311A1 (fr) | 2021-12-23 | 2023-06-30 | IFP Energies Nouvelles | Procédé de production d’une solution aqueuse d’au moins un composé furanique de pureté élevée |
| FR3131314A1 (fr) | 2021-12-23 | 2023-06-30 | IFP Energies Nouvelles | Procédé de production d’une solution aqueuse de 2,5-diformylfurane (DFF) |
| FR3131313B1 (fr) | 2021-12-23 | 2023-12-01 | Ifp Energies Now | Procédé de production d’une solution aqueuse de 5-hydroxyméthylfurfural (5-HMF) |
| FR3131309A1 (fr) | 2021-12-23 | 2023-06-30 | IFP Energies Nouvelles | Procédé de production d’une solution aqueuse d’au moins un composé furanique |
| FR3131310B1 (fr) | 2021-12-23 | 2023-12-01 | Ifp Energies Now | Procédé de production d’une solution aqueuse de 5-hydroxyméthylfurfural (5-HMF) de pureté élevée |
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| DE621517C (de) | 1933-12-22 | 1935-11-08 | Felten & Guilleaume Carlswerk | Anordnung zur Ermittlung des Fehlerortes von Druckrohranlagen fuer elektrische Druckkabel |
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| DE635783C (de) * | 1934-06-03 | 1936-09-28 | Borys Korotkyj Dr | Verfahren zur Herstellung von Alkoxymethylfurfurolen und Laevulinsaeurealkylestern |
| US3095882A (en) * | 1961-08-04 | 1963-07-02 | Philip Morris Inc | Tobacco flavorants |
| US3290263A (en) * | 1962-08-02 | 1966-12-06 | Colonial Sugar Refining Co | Process of reacting sugars with reagents wherein the sugar is dissolved in monohydric alcohols containing grouping |
| US4464204A (en) * | 1982-11-29 | 1984-08-07 | A. E. Staley Manufacturing Company | Alkylidenation of fructose with perfluorinated acid catalysts |
| JPS6028970A (ja) * | 1983-07-25 | 1985-02-14 | Hidefumi Hirai | 主鎖にテトラヒドロフラン環を含むオリゴエステル |
| DE3502802A1 (de) | 1985-01-29 | 1986-07-31 | Ernst 7504 Weingarten Kirchgässner | Verfahren zur besseren und umweltfreundlicheren nutzung von treibstoffen |
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| DE3621517A1 (de) * | 1986-06-27 | 1988-01-07 | Klaus Dipl Chem Dr Garves | Darstellung von alkoxymethylfurfuralen und alkyllevulinaten aus cellulose oder lignocellulosen oder staerke und alkoholen |
| FR2670209B1 (fr) | 1990-12-07 | 1995-04-28 | Commissariat Energie Atomique | Procede de preparation d'hydroxymethyl-5 furfural par catalyse heterogene. |
| US5616631A (en) * | 1994-08-17 | 1997-04-01 | Kao Corporation | Binder composition for mold making, binder/curing agent composition for mold making, sand composition for mold making, and process of making mold |
| FR2723945B1 (fr) * | 1994-08-24 | 1996-10-18 | Ard Sa | Procede de fabrication de l'acide 2,5-furane dicarboxylique |
| AU4700199A (en) | 1998-06-23 | 2000-01-10 | Regents Of The University Of California, The | Method of treating biomass material |
| RU2203279C1 (ru) * | 2001-10-22 | 2003-04-27 | Институт химии и химической технологии СО РАН | Способ получения простых эфиров 5-гидроксиметилфурфурола |
| US7393963B2 (en) * | 2004-12-10 | 2008-07-01 | Archer-Daniels-Midland Company | Conversion of 2,5-(hydroxymethyl)furaldehyde to industrial derivatives, purification of the derivatives, and industrial uses therefor |
| US7317116B2 (en) * | 2004-12-10 | 2008-01-08 | Archer-Daniels-Midland-Company | Processes for the preparation and purification of hydroxymethylfuraldehyde and derivatives |
| EP1834950A1 (en) | 2006-03-10 | 2007-09-19 | Avantium International B.V. | Method for the synthesis of 5-alkoxymethylfurfural ethers and their use |
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