Pd含量对SO42-/ZrO2-WO3固体超强酸催化剂其异构化性能的影响

宋华; 宋华林; 崔雪涵; 张旭

Pd含量对SO₄^2-/ZrO₂-WO₃固体超强酸催化剂其异构化性能的影响

宋华^1,2,,
宋华林³,
崔雪涵¹,
张旭¹

1.
东北石油大学化学化工学院, 黑龙江大庆 163318;
2.
东北石油大学石油与天然气化工省重点实验室, 黑龙江大庆 163318;
3.
牡丹江医学院黑龙江省高校肿瘤疾病防治重点实验室, 黑龙江牡丹江 157011

基金项目: 中国石油天然气股份有限公司科技风险创新基金(07-06D-01-04-03-02)。

详细信息

通讯作者:
宋华林,E-mail:songhualin401@126.com;Tel:+86-0453-6984321

中图分类号: TQ426.99
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出版历程
- 收稿日期: 2012-04-20
- 修回日期: 2012-07-05
- 刊出日期: 2012-11-30

Effect of Pd content on the catalytic performance of SO₄^2-/ZrO₂-WO₃ solid superacid in pentane isomerization

1.
College of Chemistry and Chemical Engineering, Northeast Petroleum University, Daqing 163318, China;
2.
Heilongjiang Provincial Key Laboratory of Chemical Engineering of Oil and Gas, Northeast Petroleum University, Daqing 163318, China;
3.
Key Laboratory of Cancer Prevention and Treatment of Heilongjiang Province, Mudanjiang Medical University, Mudanjiang 157011, China

摘要

摘要: 制备了Pd-SO₄^2-/ZrO₂-WO₃型固体超强酸催化剂,并采用XRD、FT-IR、TPR、XPS、BET和TG-DTA等表征手段对催化剂进行了表征。以正戊烷异构化为探针反应,考察了Pd含量对催化剂异构化活性的影响。结果表明,Pd可以明显地降低催化剂的还原温度,提高催化剂中SO₄^2-的分解温度,从而提高了催化剂热稳定性。当Pd质量分数为0.05%时,Pd-SO₄^2-/ZrO₂-WO₃固体超强酸催化剂的催化活性最好。该催化剂在反应温度260℃、反应压力2.0 MPa、质量空速为1.0 h^-1、氢油比为4.0时,异戊烷收率和液收率为40.1%和93.9%。
- 固体超强酸 /
- 催化剂 /
- ZrO₂-WO₃ /
- 钯 /
- 正戊烷 /
- 异构化
Abstract: Pd-SO₄^2-/ZrO₂-WO₃ solid superacid catalysts were prepared and characterized by XRD, FT-IR, TPR, XPS, BET and TG-DTA; the effect of Pd content on its catalytic performance in n-pentane isomerization was investigated. The results showed that Pd can reduce the reduction temperature, increase the decomposition temperature of SO₄^2- and therefore improve the thermostability of the Pd-SO₄^2-/ZrO₂-WO₃ catalysts. Pd-SO₄^2-/ZrO₂-WO₃ with a Pd mass fraction of 0.05% exhibits the highest catalytic activity for isomerization; over it under 260℃, 2.0 MPa, mass hourly space velocity of 1.0 h^-1, and H₂/n-pentane molar ration of 4.0, the conversion of n-pentane and the yield of liquid products are 40.1% and 93.9%, respectively.
- solid superacid /
- catalyst /
- ZrO₂-WO₃ /
- palladium /
- pentane /
- isomerization

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