CN107188795A - 一种低温催化氧化法制备糖二酸的方法 - Google Patents
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Abstract
本发明公开了一种低温催化氧化法制备糖二酸的方法,步骤是(1)、金属催化剂、反应底物的摩尔比为1:200至1:5000;(2)、操作温度为20‑150;(3)、操作压力为1‑50个大气压的氧气压力;(4)、反应底物和溶剂的质量比为1:100到1:2;(5)、反应底物与催化剂的接触时间约为5‑50小时;(6)、工艺过程可以为间歇过程或连续过程;本发明具有制备工艺简单、方便,制备效果好,工作效率高等优点。
Description
技术领域
本发明涉及的是一种低温催化氧化法制备糖二酸的方法。
背景技术
葡萄糖二酸(四羟基己二酸)是在植物和哺乳动物中早已发现的化合物。近年来,在美国国家再生能源研究所关于需要由生物物质制作的高附加值化学品的报告(非专利文献1)中举出了葡萄糖二酸作为前12名以内的化合物。在该报告中作为可以以葡萄糖二酸为原料制备出的葡萄糖二酸衍生物还示例出了葡糖二酸-γ-内酯、葡糖二酸-δ-内酯或葡糖二酸二内酯等内酯类(可期待其作为溶剂的用途);多羟基聚酰胺类(可期待其作为新型尼龙的用途)等。此外,该报告中还推测可利用淀粉的硝酸氧化反应或碱性漂白剂存在下的催化氧化反应作为已知的葡萄糖二酸制造方法。
现有的糖二酸制备方法普遍存在比较复杂、制备困难等缺陷。
发明内容
本发明的目的在于针对现有技术的缺陷和不足,提供了一种低温催化氧化法制备糖二酸的方法。
为实现上述目的,本发明采用的技术方案是:
一种低温催化氧化法制备糖二酸的方法,其步骤是:
1.金属催化剂、反应底物的摩尔比为1:200至1:5000;
2.操作温度为20-150℃;
3.操作压力为1-50个大气压的氧气压力;
4.反应底物和溶剂的质量比为1:100到1:2;
5.反应底物与催化剂的接触时间约为5-50小时;
6.工艺过程可以为间歇过程或连续过程。
进一步,所述金属催化剂包括PtCu、PtCo、PtPd、PdCu、PdAu和AuCu双金属催化剂,还包括PtCuPd、PtCuPd、PtFePd、AuCuPd等三金属催化剂。
采用上述结构后,本发明的有益效果为:本发明具有制备工艺简单、方便,制备效果好,工作效率高等优点。
具体实施方式
为了使本发明的目的、技术方案及优点更加清楚明白,以下结合具体实施方式,对本发明进行进一步详细说明。应当理解,此处所描述的具体实施方式仅用以解释本发明,并不用于限定本发明。
一、葡萄糖酸氧化反应
表1.葡萄糖酸在Pt和Pd催化剂上氧化反应结果
括号内的数字为金属负载量,例如Pt(2)TiO2:2w%Pt含量,TiO2载体.反应条件:3.0g葡萄糖酸钠,1.00g of NaOH,H2O作为溶剂,总反应体积为50mL,1bar of O2压力,反应时间为6小时.GcA:葡萄糖二酸,TarA:甘油二酸,LA:乳酸,GlyA:甘油酸,GloA:乙醇酸,OxA:乙二酸。
表2.葡萄糖单酸在Pt和Pd催化剂上氧化反应结果
括号内的数字为金属负载量,例如Pt(2)TiO2:2w%Pt含量,TiO2载体.反应条件:3.0g葡萄糖酸钠,1.00g of NaOH,H2O作为溶剂,总反应体积为50mL,2bar of O2压力.GcA:葡萄糖二酸,TarA:甘油二酸,LA:乳酸,GlyA:甘油酸,GloA:乙醇酸,OxA:乙二酸。二、葡萄糖氧化转化
表3.葡萄糖在Pt和Pd等催化剂上氧化反应结果
括号内的数字为金属负载量,例如Pt(2)TiO2:2w%Pt含量,TiO2载体.反应条件:3.0g葡萄糖,1.50g of NaOH,H2O作为溶剂,总反应体积为50mL,2bar of O2压力.GcA:葡萄糖二酸,TarA:甘油二酸,LA:乳酸,GlyA:甘油酸,GloA:乙醇酸,OxA:乙二酸.
表4.葡萄糖在Pt、Pd和Au催化剂上氧化反应结果
括号内的数字为金属负载量,例如Pt(2)TiO2:2w%Pt含量,TiO2载体.反应条件:3.0g葡萄糖,1.50g of NaOH,H2O作为溶剂,总反应体积为50mL,2bar of O2压力.GcA:葡萄糖二酸,TarA:甘油二酸,LA:乳酸,GlyA:甘油酸,GloA:乙醇酸,OxA:乙二酸.
三、甘油氧化反应
表5.甘油在Pt和Pd催化剂上反应结果
Pt(2)TiO2:2w%Pt含量,TiO2载体.反应条件:3.0g甘油,1.00g of NaOH,H2O作为溶剂,总反应体积为50mL,1bar of O2压力.GcA:葡萄糖二酸,TarA:甘油二酸,LA:乳酸,GlyA:甘油酸,GloA:乙醇酸,OxA:乙二酸.
表6.甘油在Pt、Pd和Au催化剂上氧化反应结果
括号内的数字为金属负载量,例如Pt(2)TiO2:2w%Pt含量,TiO2载体.反应条件:3.0g甘油,1.50g of NaOH,H2O作为溶剂,总反应体积为50mL,2bar of O2压力.TarA:甘油二酸,LA:乳酸,GlyA:甘油酸,GloA:乙醇酸,OxA:乙二酸。
对于本领域技术人员而言,显然本发明不限于上述示范性实施例的细节,而且在不背离本发明的精神或基本特征的情况下,能够以其他的具体形式实现本发明。因此,无论从哪一点来看,均应将实施例看作是示范性的,而且是非限制性的,本发明的范围由所附权利要求而不是上述说明限定,因此旨在将落在权利要求的等同要件的含义和范围内的所有变化囊括在本发明内。
此外,应当理解,虽然本说明书按照实施方式加以描述,但并非每个实施方式仅包含一个独立的技术方案,说明书的这种叙述方式仅仅是为清楚起见,本领域技术人员应当将说明书作为一个整体,各实施例中的技术方案也可以经适当组合,形成本领域技术人员可以理解的其他实施方式。
Claims (2)
1.一种低温催化氧化法制备糖二酸的方法,其特征在于:步骤是:
(1)、金属催化剂、反应底物的摩尔比为1:200至1:5000;
(2)、操作温度为20-150℃;
(3)、操作压力为1-50个大气压的氧气压力;
(4)、反应底物和溶剂的质量比为1:100到1:2;
(5)、反应底物与催化剂的接触时间约为5-50小时;
(6)、工艺过程可以为间歇过程或连续过程。
2.根据权利要求1所述的一种低温催化氧化法制备糖二酸的方法,其特征在于:所述金属催化剂包括PtCu、PtCo、PtPd、PdCu、PdAu和AuCu双金属催化剂,还包括PtCuPd、PtCuPd、PtFePd、AuCuPd等三金属催化剂。
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Cited By (2)
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CN108383717A (zh) * | 2018-04-18 | 2018-08-10 | 中国石油大学(华东) | 一种生物质基丙二酸的制备方法 |
CN113493379A (zh) * | 2020-04-03 | 2021-10-12 | 山东惠生堂生物医药有限公司 | 葡萄糖二酸钙的制备方法 |
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CN108383717B (zh) * | 2018-04-18 | 2021-05-11 | 中国石油大学(华东) | 一种生物质基丙二酸的制备方法 |
CN113493379A (zh) * | 2020-04-03 | 2021-10-12 | 山东惠生堂生物医药有限公司 | 葡萄糖二酸钙的制备方法 |
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Application publication date: 20170922 |