논문 해외 국제전문학술지(SCI급) Regenerable Light Olefin Production via Steam-Enhanced Catalytic Cracking of n-Dodecane on P-ZSM-5 Extrudate
- 학술지 구분 국제전문학술지(SCI급)
- 게재년월 2026-04
- 저자명 Park, H., Ahn, J.-H., Khujamuratov, T., Kim, C. U., Kim, J.-C., Nguyen, L., Park, M. B., Kim, T.-W.*
- 학술지명 Energy & Fuels
- 발행처명 ACS
- 발행국가 해외
- 논문언어 외국어
- 전체저자수 8
- 원문 링크 https://pubs.acs.org/doi/10.1021/acs.energyfuels.6c00286
홈페이지논문 초록 (Abstract)
To address the growing demand for light olefins and the declining use of middle-distillate transportation fuels, this study investigated steam catalytic cracking (SCC) of n-dodecane (n-C12) over ZSM-5 based catalysts as a model system for heavier hydrocarbon feeds. Commercial H-ZSM-5 zeolites with different SiO2/Al2O3 molar ratios (SAR = 30–280) were first evaluated under dry catalytic cracking (DCC) and SCC conditions. In DCC, high-SAR ZSM-5(280) provided the highest light olefin yield, whereas in SCC the low-SAR ZSM-5(30) achieved a light olefin yield of 71.8% with strongly suppressed coke deposition. On the optimal zeolite ZSM-5(30), a moderate P loading (1–2.5 wt%) increased the n-C12 conversion without sacrificing olefin selectivity, owing to controlled moderation of Brønsted and Lewis acid sites and improved hydrothermal stability. The optimal 1.5P-ZSM-5(30) was shaped into cylindrical extrudates using colloidal silica as an Al-free binder, giving sufficient mechanical strength while preserving the catalytic performance of the powder catalyst. Under optimized SCC conditions (650 ℃, water feed = 6 mL∙h−1, WHSV = 4 h−1), the 1.5P-ZSM-5(30) extrudate maintained light olefin yields above 60% for more than 100 h on stream and showed excellent regenerability with minimal loss of acidity. These results demonstrate that phosphorus-modified ZSM-5 extrudates are promising industrial catalysts for steam catalytic cracking of long-chain hydrocarbons.