Stannous oxalate as a novel catalyst for the synthesis of polytrimethylene terephthalate

Ren, Yu Rong; Jia, Shu Yong; Zhang, Shou Cai; Liu, Chun Ling; Cui, Yun Cheng

doi:10.1016/j.cclet.2007.03.012

Cited by 3 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The SnC 2 O 4 powder used in this work was first synthesized in our laboratory by the method described in Ren et al 25 . and Sun et al 26 .…”

Section: Methodsmentioning

confidence: 99%

“…The SnC 2 O 4 powder used in this work was first synthesized in our laboratory by the method described in Ren et al 25 and Sun et al 26 Typically, 20 mL 2.4 mmol/L ethanol solution of SnCl 2 Á 2H 2 O was mixed with 30 mL 0.08 mol/L ethanol solution of oxalic acid at 251C for 3 h under stirring. The precipitate was filtered off and washed with ethanol four times.…”

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Preparation and Process Chemistry of SnO₂ Films Derived from SnC₂O₄ by the Aqueous Sol–Gel Method

Liu

Jin

Yang

et al. 2008

Journal of the American Ceramic Society

View full text Add to dashboard Cite

Nanocrystalline SnO2 films were prepared from SnC2O4 by a sol–gel route. A clarified and stable Sn‐containing sol was obtained by dissolving and chelating SnC2O4 with C6H8O7 and H2C2O4 in a C6H8O7/triethanolamine (TEA) mixing aqueous solution with a pH of 6.5–7.0. The chelation and condensation reactions were deducted based upon infrared, Raman, and X‐ray photoelectron spectra analysis. Results illuminated that a number of ionized‐state carboxyl groups and active tin hydrate were produced in the mixing solution by amido association of TEA with H on –COOH of H3L and H2C2O4, supplying a precondition for tin sol formation. X‐ray diffraction and field emission scanning electron microscope analysis indicated that SnO2 film had a rutile structure and consisted of nanocrystals with a mean size of about 7 nm. Film thickness could be controlled by the number of dip coating—annealing cycles according to 30–45 nm/cycle for a Sn concentration of 0.25 mol/L.

show abstract

“…The SnC 2 O 4 powder used in this work was first synthesized in our laboratory by the method described in Ren et al 25 . and Sun et al 26 .…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Preparation and Process Chemistry of SnO₂ Films Derived from SnC₂O₄ by the Aqueous Sol–Gel Method

Liu

Jin

Yang

et al. 2008

Journal of the American Ceramic Society

View full text Add to dashboard Cite

show abstract

Chemistry and Technology of Step-Growth Polyesters

Turner

Liu

2012

Polymer Science: A Comprehensive Reference

View full text Add to dashboard Cite

Selective Association Enforced by the Confinement Effect To Boost the Regioselectivity of Vinyl Acetate Hydroformylation

Wang,

Jiang,

Fan

et al. 2024

ACS Catal.

View full text Add to dashboard Cite

1,3-Propanediol derived from vinyl acetate through hydroformylation/hydrogenation has always been considered the most promising strategy to substitute the current technology. So far, the linear aldehyde regioselectivity of vinyl acetate hydroformylation is still far from satisfactory. Herein, we prepare a series of single-site catalysts with a confinement effect, in which different second-shell atoms (C, O, and N) are bonded with the P atom. The Rh−P−N-POPs catalyst, in which two N and one O atoms are bonded with a P atom, delivers not only a good aldehyde yield but also attractive regioselectivity (l/b = 1.5), outperforming Rh− P−C-POPs (l/b = 0.007), Rh−P−O-POPs (l/b = 0.01), and all previously reported optimizing Rh catalysts (l/b = 0.8). Characterizations and DFT calculations suggest that the enhanced performance is mainly ascribed to selective association enforced by the confinement effect and electron-deficient properties. The confinement effect, which is imposed by the ligand, hinders the chelating effect of acetate and facilitates the selective association of Rh with the terminal carbon of olefins. Meanwhile, N as second-shell atoms in the Rh−P−N-POPs catalyst endows Rh active sites with an electron-deficient coordination environment and accelerates the linear aldehyde forming rate. This work offers an effective strategy to regulate the hydroformylation performance by the confinement effect for the modulation of a second-shell atom, which sheds light on designing heterogeneous catalysts with high regioselectivity for the hydroformylation of functional olefins.

show abstract

Stannous oxalate as a novel catalyst for the synthesis of polytrimethylene terephthalate

Cited by 3 publications

References 8 publications

Preparation and Process Chemistry of SnO₂ Films Derived from SnC₂O₄ by the Aqueous Sol–Gel Method

Preparation and Process Chemistry of SnO₂ Films Derived from SnC₂O₄ by the Aqueous Sol–Gel Method

Chemistry and Technology of Step-Growth Polyesters

Selective Association Enforced by the Confinement Effect To Boost the Regioselectivity of Vinyl Acetate Hydroformylation

Contact Info

Product

Resources

About

Stannous oxalate as a novel catalyst for the synthesis of polytrimethylene terephthalate

Cited by 3 publications

References 8 publications

Preparation and Process Chemistry of SnO2 Films Derived from SnC2O4 by the Aqueous Sol–Gel Method

Preparation and Process Chemistry of SnO2 Films Derived from SnC2O4 by the Aqueous Sol–Gel Method

Chemistry and Technology of Step-Growth Polyesters

Selective Association Enforced by the Confinement Effect To Boost the Regioselectivity of Vinyl Acetate Hydroformylation

Contact Info

Product

Resources

About

Preparation and Process Chemistry of SnO₂ Films Derived from SnC₂O₄ by the Aqueous Sol–Gel Method

Preparation and Process Chemistry of SnO₂ Films Derived from SnC₂O₄ by the Aqueous Sol–Gel Method