|本期目录/Table of Contents|

[1]王俊荣,黄荣福,于连荣,等.SO42-改性CrOx /VOx /SiO2催化剂及其乙烯聚合性能[J].石化技术与应用,2025,1:8-12.
　WANG Jun-rong,HUANG Rong-fu,YU Lian-rong,et al.SO42- modified CrOx /VOx /SiO2 catalyst and its ethylene polymerization performance[J].Petrochemical technology & application,2025,1:8-12.
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SO42-改性CrOx /VOx /SiO2催化剂及其乙烯聚合性能(PDF)

《石化技术与应用》[ISSN:1009-0046/CN:62-1138/TQ]

期数:
2025年1期
页码:
8-12
栏目:
出版日期:
2025-01-10

文章信息/Info

Title:
SO42- modified CrOx /VOx /SiO2 catalyst and its ethylene polymerization performance
文章编号:
1009-0045（2025）01-0008-05
作者:
王俊荣1; 黄荣福1; 于连荣1; 郭建豪2; 金玉龙2
（1.中国石油辽阳石化公司 研究院，辽宁 辽阳 111003；2.华南农业大学 材料与能源学院，广东 广州 510642）
Author(s):
WANG Jun-rong1; HUANG Rong-fu1; YU Lian-rong1; GUO Jian-hao2; JIN Yu-long2
（1.Research Institute of Liaoyang Petrochemical Company，PetroChina，Liaoyang 111003，China；2. College of Materials and Energy，South China Agricultural University，Guangzhou 510642，China）
关键词:
双金属催化剂; CrOx; VOx; 固体强酸; SO42-改性; 乙烯聚合; 双峰聚乙烯
Keywords:
bimetallic catalyst; chromium oxide; vanadium oxide; solid strong acid; SO42- modification; ethylene polymerization; bimodal polyethylene
分类号:
TQ 314.24+2；TQ 325.1+2
DOI:
DOI：10.19909/j.cnki.ISSN1009-0045.2025.01.0008
文献标识码:
B
摘要:
通过引入不同质量分数的固体强酸组分对CrOx /VOx /SiO2催化剂的载体进行SO42-改性，利用扫描电子显微镜、电感耦合等离子体发射光谱仪和物理吸附仪等对改性前后的催化剂进行表征，考察了不同n（Al）/n（Cr）和聚合温度对改性前后催化剂性能的影响，并对聚合产物进行了分析。结果表明：经SO42-改性后，催化剂的Cr，V元素实际负载量（质量分数）与理论负载量基本一致，但S元素实际负载量偏低，只有理论负载量的30%~60%；最佳的n（Al）/n（Cr）在85~95；最佳聚合温度均为75 ℃；且合成的聚乙烯产品均属于双峰聚乙烯。
Abstract:
The support of CrOx /VOx /SiO2 catalyst was modified by SO42- by introducing different mass fractions of solid strong acid components. The catalysts before and after modification were characterized by scanning electron microscope， inductively coupled plasma emission spectrometer and physical adsorption instrument. The effects of different n（Al）/n（Cr） and polymerization temperature on the performance of the catalysts before and after modification were investigated， and the polymerization products were analyzed. The results showed that after SO42-modification， the actual Cr and V element loadings （mass fraction） of the catalyst were basically consistent with the theoretical loading， but the actual S element loading was low， only 30%-60% of the theoretical loading. The optimum n（Al）/n（Cr） was in the range of 85-95. The optimum polymerization temperature was 75 ℃. The synthesized polyethylene products belonged to bimodal polyethylene.

参考文献/References

［1］ 刘妍，李旭慧，刘照辉.双峰聚乙烯的生产［J］.化工科技，2003，11（3）：53-57.［2］ Liu H T，Davey C R，Shirodkar P P.Bimodal polyethylene products from UNIPOLTM single gas phase reactor using engineered catalysts［J］.Macromolecular Symposia，2003，195（1）：309-316.［3］ 金玉龙，赵柠，程瑞华，等.双金属中心双峰聚乙烯催化剂研究进展［J］.化工学报，2017，68（2）：485-495.［4］ Alt F P，Bhm L L，Enderle H F，et al. Bimodal polyethylene-interplay of catalyst and process ［J］.Macromolecular Symposia，2001，163（1）：135-144.

备注/Memo

备注/Memo:
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更新日期/Last Update: 2025-01-10