CN109675565A - 一种催化氨硼烷水解脱氢的纳米铁催化剂的制备方法 - Google Patents
一种催化氨硼烷水解脱氢的纳米铁催化剂的制备方法 Download PDFInfo
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 73
- 239000003054 catalyst Substances 0.000 title claims abstract description 38
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 36
- 230000007062 hydrolysis Effects 0.000 title claims abstract description 27
- 238000006460 hydrolysis reaction Methods 0.000 title claims abstract description 27
- 238000006356 dehydrogenation reaction Methods 0.000 title claims abstract description 26
- JBANFLSTOJPTFW-UHFFFAOYSA-N azane;boron Chemical compound [B].N JBANFLSTOJPTFW-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- UORVGPXVDQYIDP-UHFFFAOYSA-N borane Chemical compound B UORVGPXVDQYIDP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910000085 borane Inorganic materials 0.000 claims abstract description 25
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical group C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 13
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 13
- 238000000034 method Methods 0.000 claims abstract description 13
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims abstract description 11
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 claims abstract description 10
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 6
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 claims abstract description 6
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims abstract description 6
- 230000008569 process Effects 0.000 claims abstract description 6
- 238000006722 reduction reaction Methods 0.000 claims abstract description 4
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 3
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 3
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 3
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 3
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 3
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical group [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 0.000 claims abstract description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims abstract description 3
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims abstract description 3
- 238000004064 recycling Methods 0.000 claims abstract 2
- 238000006243 chemical reaction Methods 0.000 claims description 28
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 14
- 238000006555 catalytic reaction Methods 0.000 claims description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 12
- 238000005119 centrifugation Methods 0.000 claims description 12
- 239000012265 solid product Substances 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000005406 washing Methods 0.000 claims description 11
- 239000007789 gas Substances 0.000 claims description 8
- 229910021529 ammonia Inorganic materials 0.000 claims description 7
- 229910052757 nitrogen Inorganic materials 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 6
- 238000001291 vacuum drying Methods 0.000 claims description 6
- 238000002604 ultrasonography Methods 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 3
- 238000003786 synthesis reaction Methods 0.000 claims description 3
- 240000007594 Oryza sativa Species 0.000 claims 1
- 235000007164 Oryza sativa Nutrition 0.000 claims 1
- 235000009566 rice Nutrition 0.000 claims 1
- 230000003197 catalytic effect Effects 0.000 abstract description 9
- 239000001257 hydrogen Substances 0.000 description 14
- 229910052739 hydrogen Inorganic materials 0.000 description 14
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 12
- UWTDFICHZKXYAC-UHFFFAOYSA-N boron;oxolane Chemical compound [B].C1CCOC1 UWTDFICHZKXYAC-UHFFFAOYSA-N 0.000 description 5
- 238000003756 stirring Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 4
- 239000011232 storage material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000510 noble metal Inorganic materials 0.000 description 2
- 239000010970 precious metal Substances 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- 229910003203 NH3BH3 Inorganic materials 0.000 description 1
- TZHYBRCGYCPGBQ-UHFFFAOYSA-N [B].[N] Chemical compound [B].[N] TZHYBRCGYCPGBQ-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 239000010953 base metal Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000004816 latex Substances 0.000 description 1
- 229920000126 latex Polymers 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000003760 magnetic stirring Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 239000002105 nanoparticle Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910052723 transition metal Inorganic materials 0.000 description 1
- 150000003624 transition metals Chemical class 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/74—Iron group metals
- B01J23/745—Iron
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/40—Catalysts, in general, characterised by their form or physical properties characterised by dimensions, e.g. grain size
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- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B3/00—Hydrogen; Gaseous mixtures containing hydrogen; Separation of hydrogen from mixtures containing it; Purification of hydrogen
- C01B3/02—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen
- C01B3/04—Production of hydrogen or of gaseous mixtures containing a substantial proportion of hydrogen by decomposition of inorganic compounds, e.g. ammonia
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- C—CHEMISTRY; METALLURGY
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- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
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- C01B2203/10—Catalysts for performing the hydrogen forming reactions
- C01B2203/1041—Composition of the catalyst
- C01B2203/1047—Group VIII metal catalysts
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
本发明公开了一种催化氨硼烷水解脱氢的纳米铁催化剂的制备方法,具体过程为:采用一步化学还原法在无水无氧的条件下将还原剂硼烷络合物与铁盐或亚铁盐于10~30℃搅拌反应制得纳米铁催化剂,其中硼烷络合物为四氢呋喃硼烷THF·BH3或二甲亚砜硼烷DMS·BH3,铁盐为氯化铁、硫酸铁或硝酸铁,亚铁盐为氯化亚铁、硫酸亚铁或硝酸亚铁,该纳米铁催化剂催化氨硼烷水解脱氢后能够多次重复循环使用。本发明比之前的方法得到的同类铁基催化剂具有更高的催化活性,更有效地促进了氨硼烷水解脱氢反应的进行,并且纳米铁催化剂循环稳定性能优异。
Description
技术领域
本发明属于储氢材料技术领域,具体涉及一种催化氨硼烷水解脱氢的纳米铁催化剂的制备方法。
背景技术
当今清洁的和最具应用前景的能源是氢能。随着氢能的快速发展,首要的任务是寻找安全高效的储氢材料。在研究较多的硼氮氢类储氢材料中,氨硼烷以储氢含量较高(质量分数为19.6%)、无毒、室温下稳定以及对环境友好等特性而备受关注。在室温条件下,1mol的氨硼烷在催化剂的作用下水解可产生3 mol的氢气。已有催化剂主要是过渡金属纳米粒子,包括贵金属和非贵金属。贵金属通常显示出很高的催化活性,但是由于其成本过高,限制了它们的推广应用。因此大力发展非贵金属催化剂是一种很好的选择。
Xu等首先研究了非贵金属催化剂在室温下对氨硼烷水解的催化性能,发现钴、镍和铜都能使氨硼烷完全水解放出3分子的氢气,而铁则不能。上述催化剂的合成是先将金属盐与载体结合,然后将得到的样品在空气中煅烧,再通入氢气高温还原,这种方法比较繁琐,且并未得到具有高效催化性能的铁纳米颗粒催化剂。本发明通过使用硼烷络合物作为还原剂在温和的条件下制得一种能够高效催化氨硼烷水解脱氢的纳米铁催化剂。
发明内容
本发明解决的技术问题是提供了一种反应条件温和、工艺简单、容易操作且成本低廉的催化氨硼烷水解脱氢的纳米铁催化剂的制备方法,该纳米铁催化剂用于在室温下催化氨硼烷水解脱氢,具有很好的催化活性和循环稳定性,对照传统的铁基纳米材料,其催化活性大大提高。
本发明为解决上述技术问题采用如下技术方案,一种催化氨硼烷水解脱氢的纳米铁催化剂的制备方法,其特征在于具体过程为:采用一步化学还原法在无水无氧的条件下将还原剂硼烷络合物与铁盐或亚铁盐于10~30℃搅拌反应制得纳米铁催化剂,其中硼烷络合物为四氢呋喃硼烷THF·BH3或二甲亚砜硼烷DMS·BH3,铁盐为氯化铁、硫酸铁或硝酸铁,亚铁盐为氯化亚铁、硫酸亚铁或硝酸亚铁,该纳米铁催化剂催化氨硼烷水解脱氢后能够多次重复循环使用。
本发明所述的催化氨硼烷水解脱氢的纳米铁催化剂的制备方法,其特征在于具体步骤为:将铁盐或亚铁盐置于Schlenk反应瓶中,于室温在双排管下对反应瓶进行数次抽换气使得反应瓶中充满氮气,再加入四氢呋喃超声分散后加入还原剂四氢呋喃硼烷溶液,继续超声并搅拌反应,将生成的黑色固体产物进行离心提纯处理,再用水重复离心三次洗涤处理,洗涤后得到的黑色固体产物置于真空干燥箱中于60℃干燥制得催化氨硼烷水解脱氢的纳米铁催化剂。
优选的,合成过程的反应温度为室温。
优选的,所述硼烷络合物与铁盐或亚铁盐的投料摩尔比为10:1。
本发明与现有技术相比具有以下有益效果:本发明比之前的方法得到的同类铁基催化剂具有更高的催化活性,更有效地促进了氨硼烷水解脱氢反应的进行,并且纳米铁催化剂的循环稳定性能优异。
附图说明
图1是实施例1制得纳米铁催化剂的SEM图;
图2是实施例1制得纳米铁催化剂的TEM图;
图3是实施例1制得纳米铁催化剂催化氨硼烷水解脱氢的性能测试图。
具体实施方式
以下通过实施例对本发明的上述内容做进一步详细说明,但不应该将此理解为本发明上述主题的范围仅限于以下的实施例,凡基于本发明上述内容实现的技术均属于本发明的范围。
实施例1
取无水氯化亚铁(0.5 mmol,0.068 g)粉末置于50 mL Schlenk反应瓶中,于室温在双排管下对反应瓶进行数次抽换气使得反应瓶中充满氮气,加入10 mL四氢呋喃搅拌溶液显白色,超声分散10 min后继续搅拌加入还原剂四氢呋喃硼烷溶液(5 mL,c=1 mol/L),继续超声30 min并搅拌反应过夜,将生成的黑色固体产物进行离心提纯处理,再用水重复离心三次洗涤处理,洗涤后得到的黑色固体产物置于真空干燥箱中于60℃干燥过夜制得催化氨硼烷水解脱氢的纳米铁催化剂。
实施例2
取无水氯化铁(0.5 mmol,0.081 g)粉末置于50 mL Schlenk反应瓶中,于室温在双排管下对反应瓶进行数次抽换气使得反应瓶中充满氮气,加入10 mL四氢呋喃搅拌溶液显白色,超声分散10 min后继续搅拌加入还原剂四氢呋喃硼烷溶液(5 mL,c=1 mol/L),继续超声30 min并搅拌反应过夜,将生成的黑色固体产物进行离心提纯处理,再用水重复离心三次洗涤处理,洗涤后得到的黑色固体产物置于真空干燥箱中于60℃干燥过夜制得催化氨硼烷水解脱氢的纳米铁催化剂。
实施例3
取无水氯化亚铁(0.5 mmol, 0.068 g)粉末置于50 mL Schlenk反应瓶中,于10℃在双排管下对反应瓶进行数次抽换气使得反应瓶中充满氮气,加入10 mL四氢呋喃搅拌溶液显白色,超声分散10 min后继续搅拌加入还原剂四氢呋喃硼烷溶液(5 mL,c=1 mol/L),继续超声30 min并搅拌反应过夜,将生成的黑色固体产物进行离心提纯处理,再用水重复离心三次洗涤处理,洗涤后得到的黑色固体产物置于真空干燥箱中于60℃干燥过夜制得催化氨硼烷水解脱氢的纳米铁催化剂。
实施例4
取无水氯化亚铁(0.5 mmol, 0.068 g)粉末置于50 mL Schlenk反应瓶中,于30℃在双排管下对反应瓶进行数次抽换气使得反应瓶中充满氮气,加入10 mL四氢呋喃搅拌溶液显白色,超声分散10 min后继续搅拌加入还原剂四氢呋喃硼烷溶液(5 mL,c=1 mol/L),继续超声30 min并搅拌反应过夜,将生成的黑色固体产物进行离心提纯处理,再用水重复离心三次洗涤处理,洗涤后得到的黑色固体产物置于真空干燥箱中于60℃干燥过夜制得催化氨硼烷水解脱氢的纳米铁催化剂。
实施例5
通过在一个充满水的50 mL量筒通过水置换监测反应期间释放的气体的体积。在开始催化水解释氢反应之前,先要检测装置的气密性,然后将带单颈支口的50 mL圆底Schlenk反应瓶固定于磁力搅拌器上。称量0.01 mg纳米铁催化剂转移到Schlenk反应瓶中,向其中加入8.0 mL蒸馏水,然后剧烈搅拌15 min使体系达到热平衡,再称取31 mg NH3BH3溶解在2mL水中,使用气密注射器通过乳胶塞将溶液加入到反应瓶中,并以900 rpm来搅拌混合物开始催化反应(t:min)。间隔适当时间段记录量筒中液面刻度,计算出释氢量。当无气泡冒出时,立即将另一当量的新鲜的NH3BH3加入到反应体系中,进行第二次催化释氢,记录气体生成速率,如此重复5次,将5次的释氢速率进行对照,参见图3,由此可以看出该纳米铁催化剂能够高效催化氨硼烷水解脱氢且循环性能优异。
以上实施例描述了本发明的基本原理、主要特征及优点,本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明书中描述的只是说明本发明的原理,在不脱离本发明原理的范围下,本发明还会有各种变化和改进,这些变化和改进均落入本发明保护的范围内。
Claims (4)
1.一种催化氨硼烷水解脱氢的纳米铁催化剂的制备方法,其特征在于具体过程为:采用一步化学还原法在无水无氧的条件下将还原剂硼烷络合物与铁盐或亚铁盐于10~30℃搅拌反应制得纳米铁催化剂,其中硼烷络合物为四氢呋喃硼烷THF·BH3或二甲亚砜硼烷DMS·BH3,铁盐为氯化铁、硫酸铁或硝酸铁,亚铁盐为氯化亚铁、硫酸亚铁或硝酸亚铁,该纳米铁催化剂催化氨硼烷水解脱氢后能够多次重复循环使用。
2.根据权利要求1所述的催化氨硼烷水解脱氢的纳米铁催化剂的制备方法,其特征在于具体步骤为:将铁盐或亚铁盐置于Schlenk反应瓶中,于室温在双排管下对反应瓶进行数次抽换气使得反应瓶中充满氮气,再加入四氢呋喃并超声分散后加入还原剂四氢呋喃硼烷溶液,继续超声并搅拌反应,将生成的黑色固体产物进行离心提纯处理,再用水重复离心三次洗涤处理,洗涤后得到的黑色固体产物置于真空干燥箱中于60℃干燥制得催化氨硼烷水解脱氢的纳米铁催化剂。
3.根据权利要求1或2所述的催化氨硼烷水解脱氢的纳米铁催化剂的制备方法,其特征在于:合成过程的反应温度为室温。
4.根据权利要求1或2所述的催化氨硼烷水解脱氢的纳米铁催化剂的制备方法,其特征在于:所述硼烷络合物与铁盐或亚铁盐的投料摩尔比为10:1。
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