Effect of precursor acidity on zeolite supported Pd catalyst properties and hydrodeoxygenation activity for the production of biofuel

被引:13
作者
Ayodele, O. B. [1 ,2 ]
Farouk, Hamisu U. [1 ,3 ]
Mohammed, Jibril [4 ]
Uemura, Yoshimitsu [2 ]
Daud, W. M. A. W. [1 ]
机构
[1] Univ Malaya, Fac Engn, Dept Chem Engn, Kuala Lumpur, Malaysia
[2] Univ Teknol PETRONAS, Dept Chem Engn, Ctr Biofuel & Biochem Res, Tronoh, Perak, Malaysia
[3] Bayero Univ Kano, Fac Sci, Dept Pure & Ind Chem, Pmb 3011, Kano State, Nigeria
[4] Abubakar Tafawa Balewa Univ, Dept Chem Engn, Pmb 0248, Bauchi State, Nigeria
关键词
Biofuel; Palladium catalyst; Hydrodeoxygenation; Isomerization; Oleic acid; FERRIOXALATE CATALYST; FERRIC OXALATE; RAPESEED OIL; KAOLIN CLAY; DEGRADATION; WATER; 4-NITROPHENOL; DEOXYGENATION; REMOVAL; BLUE;
D O I
10.1016/j.molcata.2015.01.033
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this study, two different zeolite (ZLT) supported palladium catalysts (Pd/Zs) of varying acidity were synthesized, characterized and tested for biofuel production. The first Pd/Z was synthesized via the incorporation of palladium oxalate complex (PdOxC) prepared from the functionalization of H2PdCl4 with oxalic acid at pH 5.3 into ZLT. The PdOxC was further modified with drops of HF until pH 3.7 and incorporated into ZLT to synthesize zeolite supported fluoride ion modified PdOxC catalyst (FPd/Z). Their characterization results showed that there is considerable crystallinity loss in Pd/Z, while FPd/Z showed drastic crystallinity loss according to the SEM and XRD results. In addition, the specific surface area and porosity of ZLT increased from 202 m(2)/g and 0.13 cm(3)/g to 371 m(2)/g and 0.23 cm(3)/g in Pd/Z, and 427 m(2)/g and 0.29 cm(3)/g in FPd/Z catalysts, respectively. Pd/Z catalyst produces 56% n-C18H38 and 11% iso-C18H38, while FPd/Z produces 58% n-C18H38 and 28% iso-C18H38 in the hydrodeoxygenation (HDO) and isomerization (ISO) steps, respectively. The enhancements in the catalysts properties are due to the acidic effect of OxA via the incorporation of PdOxC, while the additional enhancements in the properties and the ISO activity of FPd/Z was ascribed to the acidic effect of fluoride ion modification. It is obvious that OxA functionalization and subsequent fluoride ion modification are highly invaluable toward biofuel production. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码:179 / 186
页数:8
相关论文
共 38 条
[1]   Development of kaolinite supported ferric oxalate heterogeneous catalyst for degradation of 4-nitrophenol in photo-Fenton process [J].
Ayodele, O. B. ;
Hameed, B. H. .
APPLIED CLAY SCIENCE, 2013, 83-84 :171-181
[2]   Synthesis of copper pillared bentonite ferrioxalate catalyst for degradation of 4-nitrophenol in visible light assisted Fenton process [J].
Ayodele, O. B. ;
Hameed, B. H. .
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 2013, 19 (03) :966-974
[3]   Pillared montmorillonite supported ferric oxalate as heterogeneous photo-Fenton catalyst for degradation of amoxicillin [J].
Ayodele, O. B. ;
Lim, J. K. ;
Hameed, B. H. .
APPLIED CATALYSIS A-GENERAL, 2012, 413 :301-309
[4]  
Ayodele O.B., 2015, J TAIWAN I CHEM ENG
[5]  
Ayodele O.B., 2015, ENERGY CONVERS MANAG
[6]   Catalytic activity of copper modified bentonite supported ferrioxalate on the aqueous degradation and kinetics of mineralization of Direct Blue 71, Acid Green 25 and Reactive Blue 4 in photo-Fenton process [J].
Ayodele, Olumide Bolarinwa ;
Togunwa, Olayinka S. .
APPLIED CATALYSIS A-GENERAL, 2014, 470 :285-293
[8]   Effect of extra-framework cesium on the deoxygenation of methylester over CsNaX zeolites [J].
Danuthai, Tanate ;
Sooknoi, Tawan ;
Jongpatiwut, Siriporn ;
Rirksomboon, Thirasak ;
Osuwan, Somchai ;
Resasco, Daniel E. .
APPLIED CATALYSIS A-GENERAL, 2011, 409 :74-81
[9]   Optimal synthesis of micro/mesoporous beta zeolite from kaolin clay and catalytic performance for hydrodesulfurization of diesel [J].
Duan, Aijun ;
Wan, Guofu ;
Zhang, Ying ;
Zhao, Zhen ;
Jiang, Guiyuan ;
Liu, Jian .
CATALYSIS TODAY, 2011, 175 (01) :485-493
[10]   Removal of Pb2+ from water by using Na-Y zeolites prepared from Egyptian kaolins collected from different sources [J].
EL-Mekkawi, Doaa M. ;
Selim, Mohamed M. .
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING, 2014, 2 (01) :723-730