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  1. Journal of Wuhan University of Technology-Mater. Sci. Ed.
  2. Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 20
  3. Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 20, Issue 1, March 2005
  4. Preparation of 3,4-dihydro-2H-pyran catalyzed by modified gamma alumina
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Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 32
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 31
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 30
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 29
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 28
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 27
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 26
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 25
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 24
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 23
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 22
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 21
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 20
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 20, Issue 4, December 2005
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 20, Issue 3, September 2005
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 20, Issue 2, June 2005
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 20, Issue 1, March 2005
The stress distribution and thermal behavior of TiBN and TiBN/TiN coatings in milling AISI H13 work tool steel
Valence control of ce Ions in cerium-substituted yttrium iron garnet
Effects of trace silver and magnesium on the microstructure and mechanical properties of Al−Cu−Li alloys
Kinetics of internal oxidation of Cu−Al alloy plate
Effects of adhesive composition on green joining of CePO$_{4}$−ZrO$_{2}$ ceramics
The effects of aging precipitation on the recrystallization of CuNiSiCr alloy
The bonding properties of solid steel to liquid aluminum
Effect of Nb on the mechanical properties of Ti/Al$_{2}$O$_{3}$ composite
Synthesis and characterization of PEG-like structures on nitinol surface under ECR-cold-plasma
Fractal characteristics and fractal dimension measurement on broken surfaces of aluminum electric porcelain
Preparation of Al$_{2}$O$_{3}$−SiO$_{2}$−TiO$_{2}$−ZrO$_{2}$ composite ceramic membranes by Sol-Gel method
Effect of grinding and polishing on the residual stress and bending strength of a silicon nitride ceramic
The influence of mold pressing parameters on PTC of HDPE/CB composites
A new theoretical model about shear stress in magnetorheological fluids with small shear deformation
Ferrous alloy powder for laser cladding
Effect of network modifiers on spectroscopic properties of erbium-doped phosphate glasses
Fabrication silver film inside silica capillary
Parameters relevant to bubble detachment when gas-injecting into polymer melt flow field
Fabrication of Fe-6.5wt% Si bulk by spark plasma sintering
Structure and magnetic properties of Ni nanowires array fabricated by direct current electro-deposition in anodic alumina membrane
Development and physical properties of film of wheat gluten cross-linked by transglutaminase
Microstructural characteristic of montmorillonite and its thermal treatment products
Self-healing action of permeable crystalline coating on pores and cracks in cement-based materials
Preparation of 3,4-dihydro-2H-pyran catalyzed by modified gamma alumina
Modification of bitumen with desulfurized crumb rubber in the present of reactive additives
Numerical simulation of mold filling in resin transfer molding using isoparametric method
The parameters fitting in high-strength concrete mix proportion experiment
Investigation of PAT for advanced sulphoaluminate MDF cement
The influence of mineral functional materials on chloride ion penetration of concrete
Percolation model of graphite-modified asphalt concrete
Analysis of pore structures and their relations with strength of hardened cement paste
Influences of a new admixture MX on concrete durability
The impermeability mechanism of self-compacting water proof concrete
Grinding characteristics of multi-component cement-based material
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 19
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 18
Journal of Wuhan University of Technology-Mater. Sci. Ed. : Volume 17

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Preparation of 3,4-dihydro-2H-pyran catalyzed by modified gamma alumina

Content Provider Springer Nature Link
Author Xuanzhen, Jiang Zhenlu, Shen
Copyright Year 2005
Abstract A promising catalytic material, modified gamma alumina with high surface area (300 m$^{2}$/g) and higher contents of strong acid sites was developed. It was prepared by a special precipitation method with aluminum nitrate solution containing a certain amounts of orthosilicic acid and ammonia aqueous solution. Compared with commercial gamma alumina, the modified gamma alumina is an effective catalyst for dehydration of tetrahydrofurfuryl alcohol to 3,4-Dihydro-2 H-pyran. Under the optimized reaction conditions, an improved yield of 3, 4-Dihydro-2H-pyran of 93.4% was achieved. The profiles of pyridine TPD show that the modified gamma alumina exhibits more strong acid sites than that in the commercial gamma alumina, indicating the strong acid sites on the surface of the catalyst may play a crucial role in this reaction.
Starting Page 92
Ending Page 94
Page Count 3
File Format PDF
ISSN 10002413
Journal Journal of Wuhan University of Technology-Mater. Sci. Ed.
Volume Number 20
Issue Number 1
e-ISSN 19930437
Language English
Publisher Wuhan University of Technology
Publisher Date 2005-01-01
Publisher Place Wuhan
Access Restriction One Nation One Subscription (ONOS)
Subject Keyword catalytic material gamma alumina 3,4-Dihydro-2H-pyran pyridine TPD Materials Science
Content Type Text
Resource Type Article
Subject Materials Science
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