Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization
The catalytic activity of titania-loaded fibrous silica (KCC-1) catalysts synthesized using different titania (Ti) precursor compounds was first explored for the hydroisomerization of n-hexane. The Ti crystallite sizes reveal a descending order: TiSO4/KCC-1 (9.70 nm) > Ti-Iso/KCC-1 (4.86 nm) >...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English English |
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Elsevier B.V.
2025
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| Online Access: | http://umpir.ump.edu.my/id/eprint/43802/ http://umpir.ump.edu.my/id/eprint/43802/1/Precursor-driven%20acidity%20enhancement%20in%20Titania-modified%20KCC-1%20for%20efficient%20n-Hexane%20hydroisomerization_ABS.pdf http://umpir.ump.edu.my/id/eprint/43802/2/Precursor-driven%20acidity%20enhancement%20in%20Titania-modified%20KCC-1.pdf |
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| author | Mahadi, Bahari Aishah, Abdul Jalil Nurul Sahida, Hassan Madzlan, Abd Aziz Izzudin, N. M. Arezudin, A. Rahman, A. F.A. Rajendran, Saravanan Kamarizan, Kidam Herma Dina, Setiabudi |
| author_facet | Mahadi, Bahari Aishah, Abdul Jalil Nurul Sahida, Hassan Madzlan, Abd Aziz Izzudin, N. M. Arezudin, A. Rahman, A. F.A. Rajendran, Saravanan Kamarizan, Kidam Herma Dina, Setiabudi |
| author_sort | Mahadi, Bahari |
| building | UMP Institutional Repository |
| collection | Online Access |
| description | The catalytic activity of titania-loaded fibrous silica (KCC-1) catalysts synthesized using different titania (Ti) precursor compounds was first explored for the hydroisomerization of n-hexane. The Ti crystallite sizes reveal a descending order: TiSO4/KCC-1 (9.70 nm) > Ti-Iso/KCC-1 (4.86 nm) > TiCl4/KCC-1 (3.64 nm), indicating the lower Ti distribution for TiSO4/KCC-1. A decline in surface area is observed as Ti-Iso/KCC-1 (549 m2 g−1) < TiSO4/KCC-1 (599 m2 g−1) < TiCl4/KCC-1 (619 m2 g−1) < KCC-1 (644 m2 g−1), resulted from partial blockage of TiO2 particles and structural disruption of KCC-1 support. The NH3-TPD analysis reveals the total area acid amount of Ti-Iso/KCC-1 surpassed the other Ti-loaded KCC-1 catalysts, attributed to the presence of acidic protons on isopropoxide ligands. Among the n-hexane hydroisomerization catalysts, Ti-Iso/KCC-1 stands out with the most substantial isomer production, achieving a notable 59.7 % yield, followed by TiCl4/KCC-1 (54.5 %) > TiSO4/KCC-1 (54.1 %) > KCC-1 (23.1 %). This trend corresponds with the sequence of total area acid amount from NH3-TPD desorption peaks, highlighting the enhanced isomer activity in Ti-Iso/KCC-1 compared to others due to higher amounts of acidity. |
| first_indexed | 2025-11-15T03:53:10Z |
| format | Article |
| id | ump-43802 |
| institution | Universiti Malaysia Pahang |
| institution_category | Local University |
| language | English English |
| last_indexed | 2025-11-15T03:53:10Z |
| publishDate | 2025 |
| publisher | Elsevier B.V. |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | ump-438022025-02-12T08:55:39Z http://umpir.ump.edu.my/id/eprint/43802/ Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization Mahadi, Bahari Aishah, Abdul Jalil Nurul Sahida, Hassan Madzlan, Abd Aziz Izzudin, N. M. Arezudin, A. Rahman, A. F.A. Rajendran, Saravanan Kamarizan, Kidam Herma Dina, Setiabudi QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology The catalytic activity of titania-loaded fibrous silica (KCC-1) catalysts synthesized using different titania (Ti) precursor compounds was first explored for the hydroisomerization of n-hexane. The Ti crystallite sizes reveal a descending order: TiSO4/KCC-1 (9.70 nm) > Ti-Iso/KCC-1 (4.86 nm) > TiCl4/KCC-1 (3.64 nm), indicating the lower Ti distribution for TiSO4/KCC-1. A decline in surface area is observed as Ti-Iso/KCC-1 (549 m2 g−1) < TiSO4/KCC-1 (599 m2 g−1) < TiCl4/KCC-1 (619 m2 g−1) < KCC-1 (644 m2 g−1), resulted from partial blockage of TiO2 particles and structural disruption of KCC-1 support. The NH3-TPD analysis reveals the total area acid amount of Ti-Iso/KCC-1 surpassed the other Ti-loaded KCC-1 catalysts, attributed to the presence of acidic protons on isopropoxide ligands. Among the n-hexane hydroisomerization catalysts, Ti-Iso/KCC-1 stands out with the most substantial isomer production, achieving a notable 59.7 % yield, followed by TiCl4/KCC-1 (54.5 %) > TiSO4/KCC-1 (54.1 %) > KCC-1 (23.1 %). This trend corresponds with the sequence of total area acid amount from NH3-TPD desorption peaks, highlighting the enhanced isomer activity in Ti-Iso/KCC-1 compared to others due to higher amounts of acidity. Elsevier B.V. 2025 Article PeerReviewed pdf en http://umpir.ump.edu.my/id/eprint/43802/1/Precursor-driven%20acidity%20enhancement%20in%20Titania-modified%20KCC-1%20for%20efficient%20n-Hexane%20hydroisomerization_ABS.pdf pdf en http://umpir.ump.edu.my/id/eprint/43802/2/Precursor-driven%20acidity%20enhancement%20in%20Titania-modified%20KCC-1.pdf Mahadi, Bahari and Aishah, Abdul Jalil and Nurul Sahida, Hassan and Madzlan, Abd Aziz and Izzudin, N. M. and Arezudin, A. and Rahman, A. F.A. and Rajendran, Saravanan and Kamarizan, Kidam and Herma Dina, Setiabudi (2025) Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization. Molecular Catalysis, 574 (114867). pp. 1-9. ISSN 2468-8231. (Published) https://doi.org/10.1016/j.mcat.2025.114867 https://doi.org/10.1016/j.mcat.2025.114867 |
| spellingShingle | QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology Mahadi, Bahari Aishah, Abdul Jalil Nurul Sahida, Hassan Madzlan, Abd Aziz Izzudin, N. M. Arezudin, A. Rahman, A. F.A. Rajendran, Saravanan Kamarizan, Kidam Herma Dina, Setiabudi Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization |
| title | Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization |
| title_full | Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization |
| title_fullStr | Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization |
| title_full_unstemmed | Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization |
| title_short | Precursor-driven acidity enhancement in Titania-modified KCC-1 for efficient n-Hexane hydroisomerization |
| title_sort | precursor-driven acidity enhancement in titania-modified kcc-1 for efficient n-hexane hydroisomerization |
| topic | QD Chemistry T Technology (General) TA Engineering (General). Civil engineering (General) TP Chemical technology |
| url | http://umpir.ump.edu.my/id/eprint/43802/ http://umpir.ump.edu.my/id/eprint/43802/ http://umpir.ump.edu.my/id/eprint/43802/ http://umpir.ump.edu.my/id/eprint/43802/1/Precursor-driven%20acidity%20enhancement%20in%20Titania-modified%20KCC-1%20for%20efficient%20n-Hexane%20hydroisomerization_ABS.pdf http://umpir.ump.edu.my/id/eprint/43802/2/Precursor-driven%20acidity%20enhancement%20in%20Titania-modified%20KCC-1.pdf |