CN116102358A - 一种氧化铝的加工方法 - Google Patents
一种氧化铝的加工方法 Download PDFInfo
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 238000003672 processing method Methods 0.000 title abstract description 11
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims abstract description 41
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 22
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000002156 mixing Methods 0.000 claims abstract description 17
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims abstract description 16
- 239000000843 powder Substances 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000001035 drying Methods 0.000 claims abstract description 12
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 11
- 238000004898 kneading Methods 0.000 claims abstract description 7
- 239000004094 surface-active agent Substances 0.000 claims abstract description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000006229 carbon black Substances 0.000 claims abstract description 5
- 239000011863 silicon-based powder Substances 0.000 claims abstract description 5
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 8
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 claims description 8
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 claims description 8
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 8
- 239000001099 ammonium carbonate Substances 0.000 claims description 8
- 229940051841 polyoxyethylene ether Drugs 0.000 claims description 8
- 229920000056 polyoxyethylene ether Polymers 0.000 claims description 8
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 235000012501 ammonium carbonate Nutrition 0.000 claims description 5
- 229910021485 fumed silica Inorganic materials 0.000 claims description 5
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 4
- 239000012266 salt solution Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 claims description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 3
- 235000012538 ammonium bicarbonate Nutrition 0.000 claims description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 3
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound 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 2
- 239000003513 alkali Substances 0.000 claims description 2
- 239000012670 alkaline solution Substances 0.000 claims description 2
- SMZOGRDCAXLAAR-UHFFFAOYSA-N aluminium isopropoxide Chemical compound [Al+3].CC(C)[O-].CC(C)[O-].CC(C)[O-] SMZOGRDCAXLAAR-UHFFFAOYSA-N 0.000 claims description 2
- MDDPTCUZZASZIQ-UHFFFAOYSA-N tris[(2-methylpropan-2-yl)oxy]alumane Chemical compound [Al+3].CC(C)(C)[O-].CC(C)(C)[O-].CC(C)(C)[O-] MDDPTCUZZASZIQ-UHFFFAOYSA-N 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 2
- 239000003054 catalyst Substances 0.000 abstract description 8
- 238000002360 preparation method Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 2
- 239000002994 raw material Substances 0.000 abstract description 2
- 230000008093 supporting effect Effects 0.000 abstract description 2
- 238000009740 moulding (composite fabrication) Methods 0.000 abstract 1
- 150000002191 fatty alcohols Chemical class 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 3
- 239000004480 active ingredient Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 229910052938 sodium sulfate Inorganic materials 0.000 description 3
- 235000011152 sodium sulphate Nutrition 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000002594 sorbent Substances 0.000 description 1
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Abstract
本发明提供了一种氧化铝的加工方法，属于氧化铝制备技术领域。本发明的制备方法，首先制备氢氧化铝，然后将氢氧化铝与铵盐、气相白炭黑、硅粉、氧化锆粉、表面活性剂混合，捏合成型，干燥，焙烧，得到所述氧化铝。本发明原料中加入了气相白炭黑和硅粉，能够增加氧化铝的比表面积，加入氧化锆粉，增加氧化铝的机械性能和耐磨性能，提高氧化铝的强度，成型过程中加入铵盐，对氧化铝结构起到支撑作用，进一步提高氧化铝的强度，同时，干燥焙烧的过程中铵盐分解产生气体，进一步起到扩孔的作用，增加氧化铝的比表面积，制备的氧化铝是一种良好的催化剂载体。
Description
技术领域
本发明涉及氧化铝制备技术领域，尤其涉及一种氧化铝的加工方法。
背景技术
氧化铝是重要的催化剂载体，在工业催化方面，特别是在石油的炼制加工中，有着广泛的市场应用。氧化铝载体具有较高的比表面积、适宜的酸性以及良好的热稳定性等特点。
氧化铝作为催化剂载体使用时，通常需要负载金属活性成分或者其他活性成分，而催化剂表面的磨损会导致金属活性组分的流失或产生小颗粒堵塞反应器等，因此要求催化剂载体具有较高的耐磨强度。制备高强度、耐磨性能好的氧化铝载体是做为催化剂载体所必须具备的关键性能之一。
因此，需要提供一种氧化铝的加工方法，提高氧化铝的机械性能，同时使氧化铝满足做为催化剂载体或吸附剂所要求好的耐磨性能要求。
发明内容
有鉴于此，本发明提供了一种氧化铝的加工方法，提高氧化铝载体的机械性能，满足氧化铝载体的耐磨要求。
本发明提供的氧化铝的加工方法，包括以下步骤：
(1)将铝盐与去离子水混合，得到质量浓度为10～30％的铝盐溶液；
(2)向步骤(1)中铝盐溶液中加入碱溶液，生成沉淀，过滤，得到氢氧化铝；
(3)将步骤(2)所述的氢氧化铝与铵盐、气相白炭黑、硅粉、氧化锆粉、表面活性剂混合，得到混合物料；
(4)将步骤(3)中的混合物料捏合成型，干燥，焙烧，得到所述氧化铝。
优选的，步骤(1)所述的铝盐为硫酸铝、硝酸铝、偏铝酸钠、异丙醇铝和叔丁醇铝中的任意一种。
优选的，步骤(2)所述的碱溶液为氨水、氢氧化钠溶液中的任意一种。
优选的，步骤(3)所述的铵盐为碳酸铵、硝酸铵、碳酸氢铵中的任意一种。
优选的，步骤(3)所述的表面活性剂为脂肪醇聚氧乙烯醚硫酸钠、脂肪醇聚氧乙烯醚硫酸铵中的任意一种。
优选的，步骤(3)所述氢氧化铝与铵盐、气相白炭黑、硅粉、氧化锆粉、表面活性剂的质量比为100～120：5～10：5～10：8～15：5～15：3～8。
优选的，步骤(4)所述干燥的温度为40～60℃，干燥的时间为4～5小时。
优选的，步骤(4)所述焙烧的温度为400～600℃，焙烧的时间为4～7小时。
与现有技术相比，本发明具有以下有益效果：
本发明提供了一种氧化铝的加工方法，原料中加入了气相白炭黑和硅粉，能够增加氧化铝的比表面积，加入氧化锆粉，增加氧化铝的机械性能和耐磨性能，提高氧化铝的强度，成型过程中加入铵盐，对氧化铝结构起到支撑作用，进一步提高氧化铝的强度，同时，干燥焙烧的过程中铵盐分解产生气体，进一步起到扩孔的作用，增加氧化铝的比表面积，制备的氧化铝是一种良好的催化剂载体。
具体实施方式
下面结合实施例对本发明作进一步说明。
实施例1
一种氧化铝的加工方法，步骤如下：
(1)将硫酸铝与去离子水混合，得到质量浓度为30％的硫酸铝溶液；
(2)向步骤(1)中硫酸铝溶液中加入质量浓度为20％的氢氧化钠溶液，生成沉淀，过滤，得到氢氧化铝；
(3)将步骤(2)所述的氢氧化铝与碳酸铵、气相白炭黑、硅粉、氧化锆粉、脂肪醇聚氧乙烯醚硫酸钠按照质量比为110：7：5：10：10：5混合，得到混合物料；
(4)将步骤(3)中的混合物料捏合成型，在50℃温度下干燥4小时，然后在500℃焙烧6小时，得到直径2mm的氧化铝。
实施例2
一种氧化铝的加工方法，步骤如下：
(1)将硝酸铝与去离子水混合，得到质量浓度为20％的硝酸铝溶液；
(2)向步骤(1)中硝酸铝溶液中加入质量浓度为20％的氢氧化钠溶液，生成沉淀，过滤，得到氢氧化铝；
(3)将步骤(2)所述的氢氧化铝与碳酸铵、气相白炭黑、硅粉、氧化锆粉、脂肪醇聚氧乙烯醚硫酸铵按照质量比为100：5：8：12：7：5混合，得到混合物料；
(4)将步骤(3)中的混合物料捏合成型，在50℃温度下干燥5小时，然后在400℃焙烧5小时，得到直径2mm的氧化铝。
实施例3
一种氧化铝的加工方法，步骤如下：
(1)将硝酸铝与去离子水混合，得到质量浓度为15％的硝酸铝溶液；
(2)向步骤(1)中硝酸铝溶液中加入质量浓度为30％的氨水，生成沉淀，过滤，得到氢氧化铝；
(3)将步骤(2)所述的氢氧化铝与碳酸氢铵、气相白炭黑、硅粉、氧化锆粉、脂肪醇聚氧乙烯醚硫酸钠按照质量比为110：10：5：10：10：4混合，得到混合物料；
(4)将步骤(3)中的混合物料捏合成型，在60℃温度下干燥5小时，然后在400℃焙烧7小时，得到直径2mm的氧化铝。
对比例1
一种氧化铝的加工方法，步骤如下：
(1)将硫酸铝与去离子水混合，得到质量浓度为30％的硫酸铝溶液；
(2)向步骤(1)中硫酸铝溶液中加入质量浓度为20％的氢氧化钠溶液，生成沉淀，过滤，得到氢氧化铝；
(3)将步骤(2)所述的氢氧化铝与碳酸铵、硅粉、脂肪醇聚氧乙烯醚硫酸钠按照质量比为110：7：10：5混合，得到混合物料；
(4)将步骤(3)中的混合物料捏合成型，在50℃温度下干燥4小时，然后在500℃焙烧6小时，得到直径2mm的氧化铝。
对实施例1～3与对比例1制备的氧化铝进行性能测试，结果如表1.
表1
| <![CDATA[比表面积m<sup>2</sup>/g]]> | 强度N/粒 | |
| 实施例1 | 375 | 45 |
| 实施例2 | 354 | 42 |
| 实施例3 | 389 | 37 |
| 对比例1 | 220 | 12 |
以上所述仅是本发明的优选实施方式，应当指出，对于本技术领域的普通技术人员来说，在不脱离本发明原理的前提下，还可以做出若干改进和润饰，这些改进和润饰也应视为本发明的保护范围。
Claims (8)
1.一种氧化铝的加工方法，其特征在于，包括以下步骤：
(1)将铝盐与去离子水混合，得到质量浓度为10～30％的铝盐溶液；
(2)向步骤(1)中铝盐溶液中加入碱溶液，生成沉淀，过滤，得到氢氧化铝；
(3)将步骤(2)所述的氢氧化铝与铵盐、气相白炭黑、硅粉、氧化锆粉、表面活性剂混合，得到混合物料；
(4)将步骤(3)中的混合物料捏合成型，干燥，焙烧，得到所述氧化铝。
2.根据权利要求1所述的氧化铝的加工方法，其特征在于，步骤(1)所述的铝盐为硫酸铝、硝酸铝、偏铝酸钠、异丙醇铝和叔丁醇铝中的任意一种。
3.根据权利要求1所述的氧化铝的加工方法，其特征在于，步骤(2)所述的碱溶液为氨水、氢氧化钠溶液中的任意一种。
4.根据权利要求1所述的氧化铝的加工方法，其特征在于，步骤(3)所述的铵盐为碳酸铵、硝酸铵、碳酸氢铵中的任意一种。
5.根据权利要求1所述的氧化铝的加工方法，其特征在于，步骤(3)所述的表面活性剂为脂肪醇聚氧乙烯醚硫酸钠、脂肪醇聚氧乙烯醚硫酸铵中的任意一种。
6.根据权利要求1所述的氧化铝的加工方法，其特征在于，步骤(3)所述氢氧化铝与铵盐、气相白炭黑、硅粉、氧化锆粉、表面活性剂的质量比为100～120：5～10：5～10：8～15：5～15：3～8。
7.根据权利要求1所述的氧化铝的加工方法，其特征在于，步骤(4)所述干燥的温度为40～60℃，干燥的时间为4～5小时。
8.根据权利要求1所述的氧化铝的加工方法，其特征在于，步骤(4)所述焙烧的温度为400～600℃，焙烧的时间为4～7小时。
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