CN1148257C - 用于烷烃氨氧化反应的催化剂 - Google Patents
用于烷烃氨氧化反应的催化剂 Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title abstract description 8
- 150000001335 aliphatic alkanes Chemical class 0.000 title description 3
- 230000003647 oxidation Effects 0.000 claims abstract description 8
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 8
- 238000005245 sintering Methods 0.000 claims description 13
- 125000002091 cationic group Chemical group 0.000 claims description 7
- 239000007809 chemical reaction catalyst Substances 0.000 claims 3
- 150000001768 cations Chemical class 0.000 abstract 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 118
- 229910052681 coesite Inorganic materials 0.000 description 59
- 229910052906 cristobalite Inorganic materials 0.000 description 59
- 239000000377 silicon dioxide Substances 0.000 description 59
- 235000012239 silicon dioxide Nutrition 0.000 description 59
- 229910052682 stishovite Inorganic materials 0.000 description 59
- 229910052905 tridymite Inorganic materials 0.000 description 59
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 28
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 14
- 238000006243 chemical reaction Methods 0.000 description 12
- NLHHRLWOUZZQLW-UHFFFAOYSA-N Acrylonitrile Chemical compound C=CC#N NLHHRLWOUZZQLW-UHFFFAOYSA-N 0.000 description 11
- 238000000034 method Methods 0.000 description 11
- 239000001294 propane Substances 0.000 description 10
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 8
- 229930195733 hydrocarbon Natural products 0.000 description 5
- 150000002430 hydrocarbons Chemical class 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 150000002825 nitriles Chemical class 0.000 description 4
- 229910000069 nitrogen hydride Inorganic materials 0.000 description 4
- 230000009466 transformation Effects 0.000 description 4
- GYCMBHHDWRMZGG-UHFFFAOYSA-N Methylacrylonitrile Chemical compound CC(=C)C#N GYCMBHHDWRMZGG-UHFFFAOYSA-N 0.000 description 3
- 229910021529 ammonia Inorganic materials 0.000 description 3
- 238000005915 ammonolysis reaction Methods 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 244000287680 Garcinia dulcis Species 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- CNKLWERGKGROOW-UHFFFAOYSA-N CCC.C=CC#N Chemical compound CCC.C=CC#N CNKLWERGKGROOW-UHFFFAOYSA-N 0.000 description 1
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- JYYOBHFYCIDXHH-UHFFFAOYSA-N carbonic acid;hydrate Chemical compound O.OC(O)=O JYYOBHFYCIDXHH-UHFFFAOYSA-N 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000008450 motivation Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
一种由如下的经验式表征的氨氧化反应催化剂,包括:VSbaSnbTicFedOx;其中1≤a≤1.8,0≤b≤0.35,0≤c≤0.15,0<d≤0.8,0<b+c≤0.5,1≤a-d<1.8,及当a-d>1.2时,0<d≤0.5及0.3≤b+c≤0.5,及当a-d≤1.2时,0.2<d≤0.8及0<b+c<0.3,及x由催化剂中阳离子的氧化态决定。优选催化剂在至少780℃的温度下烧结。
Description
技术领域
本发明涉及一种催化剂及一种方法,该方法使用公开的催化剂由丙烷和异丁烷经催化氨氧化反应制备其对应的α,β-不饱和一腈,即丙烯腈和甲基丙烯腈。
背景技术
由于丙烯和丙烷之间的价格差,因此出于经济方面的动机促使开发一种可行的催化剂及由丙烷转化为丙烯腈的催化方法。
在该领域中,早期所进行的努力是开发高效的丙烷氨氧化反应制丙烯腈的方法,因为要么所得到的丙烯腈产率不够高,要么所用的方法中必须在原料中加入卤素促进剂。后者不仅需要由特殊耐腐蚀材料制造的反应器,而且也需要回收大量的促进剂。为此,增加的成本抵消了丙烷/丙烯的价格差带来的优势。
目前,转让给本发明受让人的美国专利US 5,008,427和5,498,588涉及新颖的丙烷氨氧化反应催化剂,和使用这些催化剂从丙烷制丙烯腈的方法。本发明涉及这些催化剂的改进。
发明内容
本发明的目的是提供一种链烷烃的氨氧化反应制不饱和一腈的改进的催化剂,特别是,丙烷和异丁烷的氨氧化反应制丙烯腈或甲基丙烯腈。
本发明的另外一个目的是提供一种从低级链烷烃制不饱和一腈的改进的催化氨氧化反应的方法,特别是,分别从丙烷和异丁烷生产丙烯腈和甲基丙烯腈的催化氨氧化反应的方法。
从伴随的公开和所附的权利要求的描述中,本发明的其它目的、特征和优点显而易见。
根据本发明的一个方面,提供一种催化剂,其含有如下的经验式表示的按比例组成的元素。
VSbaSnbTicFedOx
其中
1≤a≤1.8
0≤b≤0.35
0≤c≤0.15
0<d≤0.8
0<b+c≤0.5
1≤a-d<1.8
及当a-d>1.2时,0<d<0.5及0.3≤b+c≤0.5
及当a-d≤1.2时,0.2<d≤0.8及0<b+c<0.3
及x由催化剂中阳离子的氧化态决定。
在本发明的另一方面,制备α,β-不饱和一腈的方法包括,在催化剂存在下,在气相的一个反应区内,选自丙烷和异丁烷的链烷烃与氧和氨接触,反应区的气相组成中含有的链烷烃与氨的摩尔比为2.5~16,及链烷烃与氧的摩尔比约为1~10,所述的催化剂含有的元素和比例由如下的经验式表示:
VSbaSnbTicFedOx
其中
1≤a≤1.8
0≤b≤0.35
0≤c≤0.15
0<d≤0.8
0<b+c≤0.5
1≤a-d<1.8
及当a-d>1.2时,0<d<0.5及0.3≤b+c≤0.5
及当a-d≤1.2时,0.2<d≤0.8及0<b+c<0.3
及x由催化剂中阳离子的氧化态决定。
在本发明另外的优选实施方式中,催化剂含有如下的经验式表示的按比例分配的元素。
VSbaSnbTicFedOx
其中
1.3≤a≤1.8
0≤b≤0.2
0≤c≤0.1
0.2<d≤0.6
0<b+c<0.3
1≤a-d≤1.2
及x由催化剂中阳离子的氧化态决定。
在本发明的又一个优选实施方式中,催化剂含有如下的经验式表示的按比例分配的元素。
VSbaSnbTicFedOx
其中
1.5≤a≤1.8
0≤b≤0.1
0≤c≤0.05
0.3≤d≤0.6
0<b+c≤0.15
1≤a-d≤1.2
及x由催化剂中阳离子的氧化态决定。
在本发明的又一个优选实施方式中,催化剂制备时的烧结温度至少为780℃。也可使用高达1200℃的烧结温度。但烧结温度通常优选在790℃~1050℃的范围。根据组成的不同,优化的烧结温度也不同,但对于一个给定组成的催化剂,通过常规的试验可以很容易确定特定的、窄范围的、优化的烧结温度。
在本发明的氨氧化反应方法中,在反应区的气相条件下,使链烷烃、氨和分子氧的混合物接触进行反应。另外,惰性的稀释剂如氮、氦、二氧化碳和水可以在实施本发明时使用。
反应温度可以从350℃到700℃变化,但通常在430℃~520℃之间。后面的温度特别适合于丙烷氨氧化反应制丙烯腈的情况。
反应过程中的平均接触时间通常为0.01~10秒,但通常为0.02~10秒,最优选的为0.1~5秒。
反应区的压力通常为0.14-5.1个大气压(2~75psia),最优选为0.14-3.4个大气压(2~最大50psia)。
本发明优选的催化剂制备实施方式的详细描述参见转让于本发明受让人的美国专利US 5,008,427,在此引入作为参考。
本发明的详细描述
在此对本发明的催化剂和方法作更详细的描述。所提供的实施例的目的仅用来阐述本发明而不是限制本发明。
本发明的实施例(在表中的15psig相当于1.02个大气压)
表I
原料比例 | ||||||||||
实施例编号 | 催化剂组成 | WWH(hr1) | 温度(℃) | 压力(psig) | C3H8 | NH3 | O2 | N2 | C3H8转化率(%) | 丙烯腈选择性(%) |
1 | VSb1.5Sn.05Ti.05Fe.35Ox+20%SiO2 | 0.82 | 480 | 15 | 3.00 | 0.79 | 2.01 | 2.00 | 20.29 | 59.14 |
2 | VSb1.6Sn.02Ti.04Fe.6Ox+20%SiO2 | 1.60 | 480 | 15 | 3.00 | 0.81 | 2.00 | 1.99 | 20.17 | 58.35 |
3 | VSb1.8Sn.05Ti.05Fe.60x+20%SiO2 | 1.23 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.63 | 57.86 |
4 | VSb1.61Sn.05Ti.05Fe.6Ox+20%SiO2 | 1.36 | 480 | 15 | 3.00 | 0.80 | 1.99 | 1.99 | 20.57 | 57.42 |
5 | VSb1.38Sn.05Ti.1Fe.3Ox+20%SiO2 | 0.94 | 475 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 19.91 | 57.33 |
6 | VSb1.6Sn.02Ti.02Fe.50x+20%SiO2 | 1.62 | 480 | 15 | 3.00 | 0.81 | 2.00 | 1.99 | 20.14 | 57.28 |
7 | VSb1.5Sn.2Ti.1Fe.1Ox+20%SiO2 | 1.46 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.07 | 57.19 |
8 | VSb1.38Sn.05Ti.1Fe.3Ox+20%SiO2 | 1.07 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.27 | 57.16 |
9 | VSb1.4Ti.15Fe.35Ox+20%SiO2 | 1.05 | 480 | 15 | 3.00 | 0.79 | 2.01 | 2.00 | 20.66 | 56.86 |
10 | VSb1.5Sn0.05Ti0.1Fe0.35Ox+20%SiO2 | 0.84 | 475 | 15 | 3.00 | 0.81 | 1.97 | 2.01 | 19.54 | 56.08 |
11 | VSb1.4Ti.15Fe.35Ox+20%SiO2 | 1.05 | 475 | 15 | 3.00 | 0.79 | 2.01 | 2.00 | 19.65 | 56.05 |
对比例
表II
原料比例 | ||||||||||
对比例编号 | 催化剂组成 | WWH(hr1) | 温度(℃) | 压力(psig) | C3H8 | NH3 | O2 | N2 | C3H8转化率(%) | 丙烯腈选择性(%) |
12 | VSb1.38Ti.1Fe.1Ox+20%SiO2 | 0.48 | 485 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.19 | 55.75 |
13 | VSb1.2Sn0.05Ti0.15Fe0.1Ox+2D%SiO2 | 0.67 | 480 | 15 | 3.00 | 0.80 | 1.96 | 2.06 | 19.59 | 55.70 |
14 | VSb1.3Ti0.15Fe0.2Ox+20%SiO2 | 0.59 | 480 | 15 | 3.00 | 0.80 | 2.01 | 2.00 | 19.61 | 54.33 |
15 | VSb1.6Fe0.5Ox+20%SiO2 | 0.67 | 480 | 15 | 3.00 | 1.02 | 2.02 | 1.99 | 20.10 | 53.80 |
16 | VSb1.8Sn0.05Ti0.15Fe0.1Ox+20%SiO2 | 0.37 | 480 | 15 | 3.00 | 0.81 | 1.96 | 2.02 | 20.24 | 53.42 |
下表提供了本发明另外的实施例和对比例。在实施例序号前面的“C”表示是对比例。
表III
原料比例 | ||||||||||
实例编号 | 催化剂组成 | WWH(hr1) | 温度(℃) | 压力(psig) | C3H8 | NH3 | O2 | N2 | C3H8转化率(%) | 丙烯腈选择性(%) |
17 | VSb1.5Sn.05Ti.05Fe.35Ox+20%SiO2 | 0.82 | 480 | 15 | 3.00 | 0.79 | 2.01 | 2.00 | 20.29 | 59.14 |
18 | VSb1.5Sn.05Ti.05Fe.35Ox+20%SiO2 | 0.76 | 480 | 15 | 3.00 | 0.79 | 2.01 | 2.00 | 21.38 | 59.06 |
19 | VSb1.6Sn.02Ti.04Fe.6Ox+20%SiO2 | 1.60 | 480 | 15 | 3.00 | 0.81 | 2.00 | 1.99 | 20.17 | 58.35 |
20 | VSb1.38Ti.1Fe.3Ox+20%SiO2 | 0.70 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.17 | 58.21 |
C21 | VSb1.5Sn.125Ti.05Fe.225Ox+20%SiO2 | 0.67 | 480 | 15 | 3.00 | 0.81 | 2.00 | 1.99 | 20.81 | 57.99 |
C22 | VSb1.2Sn0.05Ti0.05Fe0.1Ox+20%SiO2 | 0.53 | 480 | 15 | 3.00 | 0.80 | 1.97 | 2.09 | 19.64 | 57.89 |
23 | VSb1.8Sn.05Ti.05Fe.6Ox+20%SiO2 | 1.23 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.63 | 57.86 |
C24 | VSb1.38Ti.1Fe.2Ox+20%SiO2 | 0.66 | 485 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.14 | 57.85 |
25 | VSb1.61Sn.05Ti.05Fe.6Ox+20%SiO2 | 1.36 | 480 | 15 | 3.00 | 0.80 | 1.99 | 1.99 | 20.57 | 57.42 |
26 | VSb1.38Sn.05Ti.1Fe.3Ox+20%SiO2 | 0.94 | 475 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 19.91 | 57.33 |
27 | VSb1.6Sn.02Ti.02Fe.5Ox+20%SiO2 | 1.62 | 480 | 15 | 3.00 | 0.81 | 2.00 | 1.99 | 20.14 | 57.28 |
28 | VSb1.5Sn.2Ti.1Fe.1Ox+20%SiO2 | 1.46 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.07 | 57.19 |
29 | VSb1.38Sn.05Ti.1F8.3Ox+20%SiO2 | 1.07 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.27 | 57.16 |
C30 | VSb1.2Sn.35Ti.05Fe.1Ox+20%SiO2 | 1.71 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.00 | 20.13 | 56.94 |
C31 | VSb1.5Sn.125Ti.05Fe.225Ox+20%SiO2 | 0.68 | 480 | 15 | 3.00 | 0.81 | 2.00 | 1.99 | 20.57 | 56.86 |
32 | VSb1.4Ti.15Fe.35Ox+20%SiO2 | 1.05 | 480 | 15 | 3.00 | 0.79 | 2.01 | 2.00 | 20.66 | 56.86 |
C33 | VSb1.38Sn.05Ti.1Fe.2Ox+20%SiO2 | 0.64 | 485 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.23 | 56.79 |
C34 | VSb1.38Sn.05Ti.1Fe.1Ox+20%SiO2 | 0.47 | 485 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 19.58 | 56.27 |
35 | VSb1.5Sn0.05Ti0.15Fe0.35Ox+20%SiO2 | 0.68 | 480 | 15 | 3.00 | 0.80 | 1.96 | 2.06 | 19.84 | 56.17 |
36 | VSb1.5Sn0.05Ti0.1Fe0.35Ox+20%SiO2 | 0.84 | 475 | 15 | 3.00 | 0.81 | 1.97 | 2.01 | 19.54 | 56.08 |
37 | VSb1.4Ti.15Fe.35Ox+20%SiO2 | 1.05 | 475 | 15 | 3.00 | 0.79 | 2.01 | 2.00 | 19.65 | 56.05 |
C38 | VSb1.38Ti.1Fe.1Ox+20%SiO2 | 0.48 | 485 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 20.19 | 55.75 |
C39 | VSb1.2Sn0.05Ti0.15Fe0.1Ox+20%SiO2 | 0.67 | 480 | 15 | 3.00 | 0.80 | 1.96 | 2.06 | 19.59 | 55.70 |
40 | VSb1.5Sn0.05Ti0.1Fe0.35Ox+20%SiO2 | 0.84 | 480 | 15 | 3.00 | 0.81 | 1.97 | 2.01 | 20.78 | 55.65 |
C41 | VSb1.5Sn.35Ti.1Fe.35Ox+20%SiO2 | 1.71 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.00 | 19.96 | 55.58 |
原料比例 | ||||||||||
实例编号 | 催化剂组成 | WWH(hr1) | 温度(℃) | 压力(psig) | C3H8 | NH3 | O2 | N2 | C3H8转化率(%) | 丙烯腈选择性(%) |
C42 | VSb1.2Sn.35Ti.15Fe.1Ox+20%SiO2 | 1.79 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.00 | 20.04 | 55.39 |
43 | V1.0Sb1.5Sn0.2Ti0.05Fe0.35Ox+20%SiO2 | 1.30 | 480 | 15 | 3.00 | 0.82 | 1.97 | 2.04 | 20.96 | 55.35 |
C44 | VSb1.8Sn.04Ti.02Fe.5Ox+20%SiO2 | 1.56 | 480 | 15 | 3.00 | 0.81 | 2.00 | 1.99 | 20.29 | 54.92 |
45 | VSb1.8Sn.02Ti.02Fe.6Ox+20%SiO2 | 1.28 | 480 | 15 | 3.00 | 0.82 | 2.01 | 2.00 | 20.09 | 54.81 |
C46 | VSb1.3Ti0.15Fe0.2Ox+20%SiO2 | 0.59 | 480 | 15 | 3.00 | 0.80 | 2.01 | 2.00 | 19.61 | 54.33 |
C47 | VSb1.5Sn0.2Ti0.15Fe0.35Ox+20%SiO2 | 1.29 | 480 | 15 | 3.00 | 0.82 | 1.97 | 2.04 | 19.99 | 54.00 |
C48 | VSb1.5Sn.125Ti.05Fe.1Ox+20%SiO2 | 0.45 | 480 | 15 | 3.00 | 0.80 | 1.99 | 1.99 | 20.51 | 53.83 |
C49 | VSb1.6Fe0.5Ox+20%SiO2 | 0.67 | 480 | 15 | 3.00 | 1.02 | 2.02 | 1.99 | 20.10 | 53.80 |
C50 | VSb1.8Sn.35Ti.15Fe.1Ox+20%SiO2 | 1.26 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.00 | 19.50 | 53.79 |
C51 | VSb1.5Sn.125Ti.05Fe.1Ox+20%SiO2 | 0.44 | 485 | 15 | 3.00 | 0.80 | 1.99 | 1.99 | 21.03 | 53.72 |
C52 | VSb1.8Sn.04Ti.02Fe.5Ox+20%SiO2 | 1.59 | 480 | 15 | 3.00 | 0.81 | 2.00 | 1.99 | 20.09 | 53.67 |
53 | VSb1.7Ti0.1Fe0.6+20%SiO2 | 1.34 | 480 | 16 | 3.00 | 0.80 | 2.00 | 1.98 | 20.10 | 53.60 |
C54 | VSb1.8Sn0.05Ti0.15Fe0.1Ox+20%SiO2 | 0.37 | 480 | 15 | 3.00 | 0.81 | 1.96 | 2.02 | 20.24 | 53.42 |
C55 | VSb1.5Sn.125Ti.05Fe.1Ox+20%SiO2 | 0.44 | 488 | 15 | 3.00 | 0.80 | 1.99 | 1.99 | 21.36 | 53.28 |
C56 | VSb1.5Sn0.2Ti0.1Fe0.35Ox+20%SiO2 | 1.49 | 475 | 15 | 3.00 | 0.81 | 1.97 | 2.01 | 20.35 | 53.10 |
57 | VSb1.5Ti.15Fe.4Ox+20%SiO2 | 1.08 | 475 | 15 | 3.00 | 0.79 | 2.01 | 2.00 | 20.71 | 52.76 |
58 | VSb1.8Sn.02Ti.02Fe.6Ox+20%SiO2 | 1.14 | 480 | 15 | 3.00 | 0.82 | 2.01 | 2.00 | 20.71 | 52.64 |
C59 | VSb1.8Sn.35Ti.05Fe.6Ox+20%SiO2 | 2.32 | 480 | 15 | 3.00 | 0.79 | 2.00 | 2.01 | 19.85 | 51.27 |
尽管结合具体的实施例对本发明进行了详细的描述,很明显,根据上面的描述对本领域的技术人员而言,本发明可有许多改变、修饰和变化。因此,所包括的所有这样的改变、修饰和变化应该在本发明的精神和所附的权利要求的范围之内。
Claims (16)
1.一种由如下的经验式表征的氨氧化反应催化剂,包括:
VSbaSnbTicFedOx
其中
1≤a≤1.8
0≤b≤0.35
0≤c≤0.15
0.1≤d≤0.8
0<b+c≤0.5
1≤a-d<1.8
及当a-d>1.2时,0.1≤d<0.5及0.3≤b+c≤0.5
及当a-d≤1.2时,0.2<d≤0.8及0<b+c<0.3
及x由催化剂中阳离子的氧化态决定。
2.权利要求1的催化剂,其中1.3≤a≤1.8。
3.权利要求2的催化剂,其中0.2<d≤0.6。
4.权利要求3的催化剂,其中1≤a-d≤1.2。
5.权利要求1的催化剂,其中1.5≤a≤1.8。
6.权利要求3的催化剂,其中0.3≤d≤0.6。
7.权利要求1的催化剂,其中催化剂在至少780℃的温度下烧结。
8.权利要求2的催化剂,其中催化剂在至少780℃的温度下烧结。
9.权利要求3的催化剂,其中催化剂在至少780℃的温度下烧结。
10.权利要求4的催化剂,其中催化剂在至少780℃的温度下烧结。
11.权利要求5的催化剂,其中催化剂在至少780℃的温度下烧结。
12.权利要求6的催化剂,其中催化剂在至少780℃的温度下烧结。
13.一种由如下经验式表征的氨氧化反应催化剂,包括:
VSbaSnbTicFedOx
其中
1.3≤a≤1.8
0≤b≤0.2
0≤c≤0.1
0.2<d≤0.6
0<b+c<0.3
1≤a-d≤1.2
及x由催化剂中阳离子的氧化态决定。
14.权利要求13的催化剂,其中催化剂在至少780℃的温度下烧结。
15.一种由如下的经验式表征的氨氧化反应催化剂,包括:
VSbaSnbTicFedOx
其中
1.5≤a≤1.8
0≤b≤0.1
0≤c≤0.05
0.3≤d≤0.6
0<b+c≤0.15
1≤a-d≤1.2
及x由催化剂中阳离子的氧化态决定。
16.权利要求15的催化剂,其中催化剂在至少780℃的温度下烧结。
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US5498588A (en) * | 1994-09-09 | 1996-03-12 | The Standard Oil Company | Surface modification and promotion of vanadium antimony oxide catalysts |
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