CN108114716A - 一类制γ-戊内酯的催化剂及制备和应用 - Google Patents
一类制γ-戊内酯的催化剂及制备和应用 Download PDFInfo
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- DUNKXUFBGCUVQW-UHFFFAOYSA-J zirconium tetrachloride Chemical class Cl[Zr](Cl)(Cl)Cl DUNKXUFBGCUVQW-UHFFFAOYSA-J 0.000 description 1
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- B01J23/40—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of noble metals of the platinum group metals
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Abstract
本发明涉及一类用于乙酰丙酸制γ‑戊内酯的钌基催化剂及其制备方法,该类催化剂以金属有机骨架材料UiO‑66为前驱体,经热处理后得到。该类催化剂在温和条件下能完全转化乙酰丙酸加氢为γ‑戊内酯,且γ‑戊内酯的选择性可达99.9%。本发明克服了现有工艺中活性金属负载量高、高温高压、使用有机溶剂、循环使用性能差等缺点,因而该类催化剂具有潜在的工业应用价值。
Description
技术领域
本发明涉及一类用于乙酰丙酸制γ-戊内酯的钌基催化剂及其制备方法,该类催化剂以金属有机骨架材料UiO-66为前驱体,经热处理后得到。该类催化剂在温和条件下能完全转化乙酰丙酸加氢为γ-戊内酯,且γ-戊内酯的选择性可达99.9%。本发明克服了现有工艺中活性金属负载量高、高温高压、使用有机酸碱和有机溶剂、循环使用性能差等缺点,因而该类催化剂具有潜在的工业应用价值。
背景技术
能源危机与环境污染成为制约社会经济可持续化发展的关键问题。因此,寻求和开发可再生能源及高效的替代能源变得迫在眉睫。生物质能由于其储量丰富、可再生、可持续且对环境友好而受到了众多研究者的青睐。同时,生物质是唯一可以提供固定碳的可再生能源,从而它有望成为“最具有实用价值的生产可再生液体燃料的原料来源”。因此,大力发展生物质能源,研究开发生物质高效利用技术对促进能源结构改善,保证未来能源供应,建设和谐社会具有重要意义。
γ-戊内酯是一种高附加值的生物质基平台化合物,具有特殊的香味,因而广泛用于食用香料或烟用香料等,也可用作绿色反应溶剂、新型燃料添加剂、润滑剂、增塑剂等,另外其也可转化为多种具有广泛用途的化学品如1,4-戊二醇、2-甲基四氢呋喃、3-戊烯酸甲酯等,前两种产物均为需求量较大的基础化工原料,后一种为制取“生物质基尼龙”的重要原料。
目前已经报道的能高效催化乙酰丙酸制取γ-戊内酯的异相催化剂有负载型贵金属催化剂和非贵金属催化剂,如:专利公开CN 105289592A公开了一种负载量较低(<1.5wt%)的钌催化剂,在反应压力1~6MPa、反应温度30~150℃的条件下,乙酰丙酸可完全转化为γ-戊内酯,且产率可达99.9%。专利公开CN 105566258A公开了一种用分子筛为载体的负载型铂催化剂,在反应压力4~8MPa、反应温度200~240℃、反应时间6~24h的条件下,乙酰丙酸可高效转化为γ-戊内酯,且具有一定的循环使用性能。专利公开CN102617519A公开了一种骨架铜催化剂,并选择氢氧化钠为助催化剂,将乙酰丙酸高效加氢为γ-戊内酯,收率可达99.6%。其中以钌基催化剂中Ru/C的活性最高,但Ru/C在该反应体系中循环使用性能差而成为其无法工业化的难点。因此如何设计一种既能将乙酰丙酸高效催化转化为γ-戊内酯,又能循环使用,尤其是在pH较低的条件下稳定存在的催化剂,已成为高效制取γ-戊内酯工业中亟待解决的问题。
发明内容
本发明的目的在于提供一类循环使用性能优异的催化乙酰丙酸制γ-戊内酯的催化剂。
本发明是通过以下技术方案实现的:
使用金属有机骨架材料UiO-66为前驱体,经热处理得到钌基催化剂;
催化剂中的活性组分钌的质量百分比为0.1~1.5wt%;
钌基催化剂经UiO-66煅烧后浸渍上钌或者原位制备Ru@UiO-66再煅烧而得;热处理温度为600~800℃,热处理时间为4~8h,气氛为氮气。
该类催化剂在温和条件下能完全转化乙酰丙酸加氢为γ-戊内酯,反应溶剂为水,其中乙酰丙酸的质量浓度为0.01%-80%,优选浓度范围为0.1%-50%。
乙酰丙酸制γ-戊内酯反应可在釜式反应器中进行,其反应温度在50℃-200℃之间,优选反应温度在60℃-160℃之间;反应时间在0.01h-10h之间,优选反应时间在0.1h-4h之间。
本专利的创新点主要体现在以下两方面:
一是,本专利首次以金属有机骨架材料UiO-66为模板制备钌基催化剂,金属有机骨架材料是现有材料中比表面积最大的材料,因而以其为载体制备出的负载型金属催化剂的分散性能优异,由于分散性好,本发明克服了现有生产γ-戊内酯需要贵金属高负载量的问题,提高了生产体系的经济性。
二是,本专利中设计合成的钌基催化剂能高效催化转化乙酰丙酸为γ-戊内酯,且与Ru/C催化剂比,该类催化剂具有优异的循环使用性能,甚至在强无机酸(pH=1)的条件下也能循环使用五次以上,且活性无明显降低,而Ru/C即使在不加无机酸的条件下,第二次使用时的催化活性就明显下降。
综上所述,本专利提供的用于催化乙酰丙酸制取γ-戊内酯的钌基催化剂是一类非常实用的具有创造性的催化剂。
附图说明
图1.原料乙酰丙酸和产物γ-戊内酯的气相色谱图。
具体实施方式
下面将以具体的实施例来对本发明加以说明,但本发明的保护范围不局限于这些实例。
1.催化剂的制备
称取0.28g氯化锆溶于40mLDMF中,并向其中加入0.232g对苯二甲酸,加入一定量的冰乙酸和RuCl3溶液,超声30min后转入100mL水热反应釜中,将反应釜置于程序控温烘箱,设置升温速率为1℃/min,120℃下加热24h,随后缓慢降至室温(24h),过滤,DMF洗三遍,H2O洗三遍,60℃下烘一晚即得UiO-66或Ru@UiO-66材料。随后将UiO-66或Ru@UiO-66样品转入管式炉中,以5℃/min的升温速率升至600~800℃、氮气氛围下煅烧4~8h,自然降温后可得ZrO2@C载体或Ru@ZrO2@C(原位合成法)前体。
随后使用浸渍法将RuCl3溶液分散在ZrO2@C载体上制备出Ru/ZrO2@C催化剂(浸渍法)前体。
前体经NaBH4或H2还原后即得Ru/ZrO2@C催化剂。
表1.各催化剂的制备方法
实施例 | 冰乙酸量/mL | 负载方法 | 还原方式 | 催化剂 |
实施例1 | 0 | 浸渍 | NaBH4 | Ru/ZrO2@C-1 |
实施例2 | 4 | 浸渍 | NaBH4 | Ru/ZrO2@C-2 |
实施例3 | 0 | 原位合成 | NaBH4 | Ru@ZrO2@C-1 |
实施例4 | 4 | 原位合成 | NaBH4 | Ru@ZrO2@C-2 |
实施例5 | 0 | 浸渍 | H2 | Ru/ZrO2@C-3 |
实施例6 | 4 | 浸渍 | H2 | Ru/ZrO2@C-4 |
实施例7 | 0 | 原位合成 | H2 | Ru@ZrO2@C-3 |
实施例8 | 4 | 原位合成 | H2 | Ru@ZrO2@C-4 |
2.催化性能测试
(1)由乙酰丙酸制备γ-戊内酯的实验(催化剂的影响,反应温度的影响,反应时间的影响)
在30mL反应釜中,加入0.1g乙酰丙酸,5mL水,一定量的钌含量为0.80wt%催化剂,在一定温度下反应特定的时间。反应结束后用安捷伦气相色谱仪(型号GC7890,WAX色谱柱)进行原料和产物的定量分析,分析结果参见表2,表2为本发明实施例1-8制备的催化剂体系的应用数据。
表2.不同催化剂的加氢反应活性
由表2结果可以看出,不同催化剂均可有效的催化乙酰丙酸的加氢反应,获得高收率的γ-戊内酯,其中氢气还原的钌基催化剂效果较差。通过研究催化剂用量对反应活性的影响,我们发现催化剂质量在10mg左右时可以获得较优的γ-戊内酯收率,大于或小于该数值,均会使得收率降低,当催化剂用量过大时,由于该类催化剂的比表面积较大,因而使得生成的产物GVL会部分吸附在催化剂上,而使得产率降低。同样的通过比较不同的反应温度对该反应活性的影响,发现140℃时γ-戊内酯的收率最高,过高或过低的温度均导致产率小幅度下降。反应时间的影响与反应温度的影响类似,在2h的时候有最佳的收率,时间过长,会导致目标产物进一步加氢或开环,降低产物收率;过短,则会有部分原料未完全转化,造成产率偏低。
(2)由乙酰丙酸制备γ-戊内酯的实验(负载量的影响,压力的影响,乙酰丙酸浓度的影响)
在30mL反应釜中,加入5mL水,以Ru/ZrO2@C-2为催化剂,在140℃下反应2h。反应结束后用安捷伦气相色谱仪(型号GC7890,WAX色谱柱)进行原料和产物的定量分析,分析结果参见表3。
表3.不同反应条件下的加氢反应活性
由表3结果可以看出,随着催化剂钌的负载量的升高反应产物GVL的收率增加,但当负载量较高时,反应产物会过度加氢,即使将高负载量的催化剂量减少,仍然可以发现有少量的副产物生成。反应压力对该反应的影响较小,只要氢气的量就行,产物GVL的收率就高,当压力过高时反而会有少量的副产物生成,在实际生产过程中,需通过反应原料乙酰丙酸的量来确定所需的反应压力。反应底物乙酰丙酸的浓度对该反应的活性的影响也较小。(3)由乙酰丙酸制备γ-戊内酯的实验(循环使用性能)
在30mL反应釜中,加入乙酰丙酸,nLA/nRu=1000,5mL水,140℃、1MPa下反应一定时间。反应结束后将反应液过滤,并移取滤液用气相色谱检测转化率和产率,随后用大量的水清洗催化剂,在80℃烘箱中烘一晚后进行下一次循环测试。
表4.不同催化剂的循环使用性能
由表4结果可以看出,商业用的Ru/C催化剂的循环使用性能较差,即使在未额外添加无机酸的条件下,该催化剂也迅速失活,而在加入少量盐酸使反应溶液的pH值为1时,该催化剂严重失活。相反本发明专利制备的Ru/ZrO2@C-2催化剂的循环使用性能优异,即使在反应溶液中加入无机酸,活性仍没有明显下降。
从上述实施例可以看出,以乙酰丙酸为原料,通过本专利制备的钌基催化剂可以高收率的产出γ-戊内酯。且该过程中采用的钌基催化剂的循环使用性能大大优于商业的Ru/C催化剂。即使在强酸性条件下,本专利的催化剂在乙酰丙酸加氢为γ-戊内酯这个反应体系中循环使用3次后的活性依然没有明显的下降。而且整个过程绿色环保,充分显示了该类催化剂具有很高的工业应用价值。
Claims (7)
1.一类制γ-戊内酯的催化剂的制备方法,其特征在于:
使用金属有机骨架材料UiO-66为前驱体,钌基催化剂经UiO-66煅烧后浸渍上钌或者原位制备Ru@UiO-66再煅烧而得催化剂前体;所得前体经还原后得到钌基催化剂;催化剂中的活性组分钌的质量百分比为0.1~1.5wt%。
2.根据权利要求1所述的制备方法,其特征在于:
热处理温度为600~800℃,热处理时间为4~8h,气氛为氮气。
3.根据权利要求1所述的制备方法,其特征在于:
前体经NaBH4或H2还原。
4.一种权利要求1-3任一所述制备方法获得的催化剂;其中催化剂载体中碳的含量为20wt%-40wt%,ZrO2的含量为80wt%-60wt%。
5.一种权利要求4所述催化剂在转化乙酰丙酸加氢为γ-戊内酯中的应用。
6.根据权利要求5所述的应用,其特征在于:
乙酰丙酸制γ-戊内酯反应的溶剂为水;
其中乙酰丙酸的质量浓度为0.01%-80%,优选浓度范围为0.1%-50%。
7.根据权利要求5或6所述的应用,其特征在于:
乙酰丙酸制γ-戊内酯反应可在釜式反应器中进行,其反应温度在50℃-200℃之间,优选反应温度在60℃-140℃之间;反应时间在0.01h-10h之间,优选反应时间在0.1h-5h之间。
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112844379A (zh) * | 2020-12-31 | 2021-05-28 | 华南理工大学 | 金属有机骨架材料衍生物负载钌催化木质素解聚制备单酚类化学品的方法 |
CN115155639A (zh) * | 2022-07-18 | 2022-10-11 | 北京林业大学 | 一种超低负载钌催化剂及其制备方法和应用 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105289592A (zh) * | 2015-11-19 | 2016-02-03 | 中科合成油技术有限公司 | 催化乙酰丙酸加氢制备γ-戊内酯的方法 |
CN105384711A (zh) * | 2015-12-15 | 2016-03-09 | 林康艺 | 一种催化乙酰丙酸制备戊内酯的方法 |
-
2016
- 2016-11-30 CN CN201611077002.6A patent/CN108114716A/zh active Pending
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105289592A (zh) * | 2015-11-19 | 2016-02-03 | 中科合成油技术有限公司 | 催化乙酰丙酸加氢制备γ-戊内酯的方法 |
CN105384711A (zh) * | 2015-12-15 | 2016-03-09 | 林康艺 | 一种催化乙酰丙酸制备戊内酯的方法 |
Non-Patent Citations (4)
Title |
---|
XIAOLIANG YAN等: "Synthesis of mesporous and tetragonal zirconia with inherited morphology from metal-organic frameworks", 《CRYSTENGCOMM》 * |
刘树成: "基于Zr-MOF的不同形态介孔ZrO2的制备及表征", 《贵州大学硕士研究生学位论文》 * |
苏传敏等: "负载型Ru 催化剂在乙酰丙酸加氢制γ-戊内酯中的应用研究进展", 《浙江化工》 * |
蒋龙飞等: "多相催化乙酰丙酸甲酯合成γ-戊内酯的研究", 《食品工业科技》 * |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112844379A (zh) * | 2020-12-31 | 2021-05-28 | 华南理工大学 | 金属有机骨架材料衍生物负载钌催化木质素解聚制备单酚类化学品的方法 |
CN115155639A (zh) * | 2022-07-18 | 2022-10-11 | 北京林业大学 | 一种超低负载钌催化剂及其制备方法和应用 |
CN115155639B (zh) * | 2022-07-18 | 2023-10-20 | 北京林业大学 | 一种超低负载钌催化剂及其制备方法和应用 |
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