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广西科技大学 生物与化学工程学院,广西 柳州 545000
钟善思(2003—),本科生,研究方向为能源与环境催化,E-mail:2539596716@qq.com。
董金诗(1988—),博士,副教授,研究方向为能源与环境催化,E-mail:jinshidong@gxust.edu.cn。
收稿:2026-04-17,
修回:2026-04-30,
网络首发:2026-07-10,
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钟善思,宋禹,董金诗.基于Pt基催化剂的丙烷干重整-水蒸汽重整耦合制合成气中氢碳比调控机制研究[J].低碳化学与化工,
ZHONG Shansi,SONG Yu,DONG Jinshi.Study on regulation mechanism of hydrogen-carbon monoxide ratios in syngas produced by coupling propane dry reforming-steam reforming based on Pt-based catalysts[J].Low-Carbon Chemistry and Chemical Engineering,
钟善思,宋禹,董金诗.基于Pt基催化剂的丙烷干重整-水蒸汽重整耦合制合成气中氢碳比调控机制研究[J].低碳化学与化工, DOI:10.12434/j.issn.2097-2547.20260184.
ZHONG Shansi,SONG Yu,DONG Jinshi.Study on regulation mechanism of hydrogen-carbon monoxide ratios in syngas produced by coupling propane dry reforming-steam reforming based on Pt-based catalysts[J].Low-Carbon Chemistry and Chemical Engineering, DOI:10.12434/j.issn.2097-2547.20260184.
丙烷(C
3
H
8
)干重整(DRP)相较于甲烷干重整,具有反应温度较低、热力学平衡转化率高的优势,但产物氢碳比(
n
(H
2
)/
n
(CO))偏低且催化剂易失活,严重制约其工业化应用。丙烷水蒸气重整(SRP)虽反应活性较高,但存在水煤气变换(WGS)副反应,导致产物
n
(H
2
)/
n
(CO)过高,难以满足后续合成反应需求。以1Pt-Al
2
O
3
催化剂为例,系统探究了丙烷重整中引入水蒸气(H
2
O)对产物的调控机制。结果表明,在600 ℃、0.4%C
3
H
8
/1.0%CO
2
/2.0%H
2
O(百分数为体积分数)气氛下,C
3
H
8
转化率接近100%,产物中
n
(H
2
)/
n
(CO)提高至2.35。结合0.4%C
3
H
8
/2.0%H
2
O气氛下实验结果可推断,DRP-SRP耦合反应体系中,CO
2
可有效抑制WGS反应过度发生,进而获得适宜的合成气组成;H
2
O的引入可显著提升催化剂催化活性和耐久性,归因于Pt烧结被抑制。本研究可为丙烷重整制合成气的工业化应用提供重要理论参考。
Compared with methane dry reforming
propane (C
3
H
8
) dry reforming (DRP) has the advantages of lower reaction temperature and higher thermodynamic equilibrium conversion rate. However
the low hydrogen-carbon monoxide ratios (
n
(H
2
)/
n
(CO)) of the product and the easy deactivation of catalysts seriously restrict its industrial application. Although propane steam reforming (SRP) has high reaction activity
the side reaction water-gas shift (WGS) leads to high
n
(H
2
)/
n
(CO) of the product
wh
ich is difficult to meet the needs of subsequent synthesis reactions. Taking 1Pt-Al
2
O
3
as as an example
the regulation mechanism of introducing steam (H
2
O) on the product in propane reforming was systematically investigated. The results show that under 600 ℃ and 0.4%C
3
H
8
/1.0%CO
2
/2.0%H
2
O (percentage as volume fraction)
the C
3
H
8
conversion rate is close to 100%
and
n
(H
2
)/
n
(CO) in products increases to 2.35. Based on the experimental results under 0.4%C
3
H
8
/2.0%H
2
O
it can be inferred that in coupling DRP-SRP
CO
2
can effectively inhibit the excessive occurrence of WGS reaction
thereby obtaining a suitable syngas composition
and introducing H
2
O can significantly improve the catalytic activity and durability of catalysts
attributed to the suppression of Pt sintering. This study can provide important theoretical references for the industrial application of syngas produced by propane reforming.
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