SBA-15 intercalated Mg–Al hydrotalcite: An environmental friendly catalyst for hydroisomerization of olefin

• Published in: Applied catalysis. A, General Vol. 488; pp. 119 - 127
• Main Authors: Baskaran, Thangaraj, Christopher, Jayaraj, Ajithkumar, T.G., Sakthivel, Ayyamperumal
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 01.11.2014; Elsevier
• Subjects: Aluminum; Branched alkenes; Catalysis; Chemistry; Colloidal state and disperse state; Constants; Exact sciences and technology; General and physical chemistry; Heat treatment; Hydroisomerization; Intercalated-hydrotalcite; Layered materials; Magnesium; Materials selection; Mesoporous SBA-15; Molecular structure; Olefins; Porous materials; Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry; Transmission electron microscopy; Branched alkenes; Mesoporous SBA-15; Layered materials; Hydroisomerization; Intercalated-hydrotalcite; Hydrocarbon; Porous material; Mesoporosity; Heterogeneous catalysis; Hydrotalcite; Alkene; Olefin; Green chemistry; Ethylenic compound; Catalyst
• ISSN: 0926-860X; 1873-3875
• DOI: 10.1016/j.apcata.2014.09.024

SBA-15 intercalated HT materials is prepared first time and showed promising activity for hydroisomerization of olefin in vapour phase. •SBA-15 intercalated Mg–Al hydrotalcite (MASBA-HT) was synthesized first time.•Presence of SBA-15 between the interlayer facilitates to retain the layered structure after calcination (550°C).•The material showed promising activity for hydroisomerization of 1-octene.•1-Octene conversion of 80% and branched isomers selectivity of 45% was evident.•The catalytic activity remains constant on after several runs. SBA-15 Molecular sieve-intercalated Mg–Al hydrotalcite (MASBA-HT) was synthesized for the first time by a simple straightforward method. The intercalation of SBA-15 molecular sieve between the interlayer of HT was evident from powder XRD, TEM and FT-IR studies. The presence of SBA-15 facilitates retention of the layered structure for first time, even after calcination at high temperature of 550°C. The resultant material possesses moderate acidity which comes from incorporation of aluminum into the framework of SBA-15 and also contained soluble basicity similar to HT materials. The material shows promising activity for hydroisomerization of 1-octene resulting in good substrate conversion (80%) and branched isomers selectivity (45%). The catalytic activity remains constant over longer duration and repeated runs.