|本期目录/Table of Contents|

[1]李苗苗,江岩,王昆*,等.晶面调控促进Pt/TiO2催化剂对丙烷及苯系物的催化氧化活性[J].石化技术与应用,2023,3:188-191.
 LI Miao-miao,JIANG Yan,WANG Kun,et al.Crystal facet regulation to enhance catalytic oxidation activity of Pt/TiO2 catalyst for propane and benzene series[J].Petrochemical technology & application,2023,3:188-191.
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晶面调控促进Pt/TiO2催化剂对丙烷及苯系物的催化氧化活性(PDF)

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

期数:
2023年3期
页码:
188-191
栏目:
出版日期:
2023-05-10

文章信息/Info

Title:
Crystal facet regulation to enhance catalytic oxidation activity of Pt/TiO2 catalyst for propane and benzene series
文章编号:
1009-0045(2023)03-0188-04
作者:
李苗苗江岩王昆*李晶蕊谷丽芬
(中国石油石油化工研究院 兰州化工研究中心,甘肃 兰州 730060)
Author(s):
LI Miao-miaoJIANG YanWANG KunLI Jing-ruiGU Li-fen
(Lanzhou Petrochemical Research Center,Petrochemical Research Institute,PetroChina,Lanzhou 730060,China)
关键词:
锐钛矿型TiO2(001)晶面晶面调控催化氧化活性丙烷苯系物
Keywords:
anatase TiO2(001) crystal facetcrystal facet regulationcatalytic oxidation activitypropanebenzene series
分类号:
TQ 426;X 789
DOI:
DOI:10.19909/j.cnki.ISSN1009-0045.2023.03.0188
文献标识码:
B
摘要:
在TiO2水热合成过程中,通过引入氟化铵(NH4F)和氢氟酸(HF)作为晶面调控剂,来获得高暴露(001)晶面的锐钛矿型TiO2,并通过浸渍法负载Pt制得相应的Pt/TiO2催化剂。结果表明:NH4F和HF的介入,虽然均能提高纳米TiO2的(001)晶面暴露比例,并增大其晶粒尺寸,但同时均降低了其比表面积,协同影响着催化剂的催化活性;HF的介入对TiO2的(001)晶面调节功效最大,显著提高了所得Pt/TiO2-HF催化剂对苯系物及丙烷的催化氧化活性;相较于空白Pt/TiO2催化剂试样,在Pt/TiO2-HF催化剂作用下的苯系物T97由198 ℃降低至181 ℃,丙烷T50由431 ℃降低至363 ℃(T97,T50分别表示转化率为97%,50%时的反应温度)。
Abstract:
In the hydrothermal synthesis of TiO2,the ammonium fluoride (NH4F) and hydrofluoric acid(HF) were introduced as crystal facet regulators to obtain anatase TiO2 with high exposure (001) facet, and the corresponding Pt/TiO2 catalysts were prepared by the impregnation method supported by Pt. The results showed that the introduction of NH4F and HF could both increase the exposure ratio of (001) crystal facet and the grain size of nano-TiO2,whereas,the specific surface area of nano-TiO2 reduced at the same time,which synergistically affected the catalytic activity of the corresponding obtained catalysts. The introduction of HF had the greatest effect on the (001) crystal facet of TiO2. The catalytic oxidation activity of the obtained Pt/ TiO2-HF catalyst for benzene series and propane was significantly improved. Compared with the blank Pt/TiO2 catalyst samples,T97 of benzene series decreased from 198 ℃ to 181 ℃,and T50 of propane decreased from 431 ℃ to 363 ℃ in the presence of Pt/ TiO2-HF catalyst(T97 and T50 represented the reaction temperature when the corresponding conversion rate was at 97%,50% respectively.).

参考文献/References

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备注/Memo

备注/Memo:
中国石油炼化企业绿色智能化污染防治系统建设基金资助项目(项目编号:2021 DJ-6902)
更新日期/Last Update: 2023-05-10