✦ LIBER ✦

Gas-solid reactions: an unusual observation in the disproportionation of potassium benzoate to terephthalate

✍ Scribed by M.V. Gokhale; A.T. Naik; L.K. Doraiswamy

Book ID: 103007397
Publisher: Elsevier Science
Year: 1975
Tongue: English
Weight: 528 KB
Volume: 30
Category: Article
ISSN: 0009-2509
DOI: 10.1016/0009-2509(75)85072-x

No coin nor oath required. For personal study only.

✦ Synopsis

An unusual experimental observation for a gas-solid reaction system, viz. disproportionation of potassium benzoate to terephthalate in the presence of CO,, is reported. A uniform mixture of potassium benzoate and cadmium chloride as catalyst was used in the form of cylindrical pellets. It was observed that the reaction initiates at the centre forming a homogeneous reaction zone that expands radially outwards. This is explained on the basis of an "expanding core model" in complete contrast to the more common shrinking core model.

📜 SIMILAR VOLUMES

A delayed diffusion model for an unusual

A delayed diffusion model for an unusual reaction (disproportionation of potassium benzoate to terephthalate) involving an expanding reaction zone

✍ B.D. Kulkarni; L.K. Doraiswamy 📂 Article 📅 1980 🏛 Elsevier Science 🌐 English ⚖ 388 KB

A delayed ddfuslon model has been proposed for a complex gas-sohd dlsproportlonatlon of potassium benzoate, a practically rmportanr reactlon This behavlour of the reactlon, startmg at the centre and spreadmg homogeneously outwards reactton exempldied by the model exptarns the unusual A DELAYED DIFFU

Observation of the transition to an insu

Observation of the transition to an insulating state consistent with a Wigner solid in a high-density 2D hole gas

✍ P.J. Rodgers; C.J.G.M. Langerak; B.L. Gallagher; R.J. Barraclough; M. Henini; T. 📂 Article 📅 1993 🏛 Elsevier Science 🌐 English ⚖ 324 KB

Analysis of a second order gas-solid rea

Analysis of a second order gas-solid reaction in an isothermal spherical particle. Application to the reduction of oxides with gaseous substrates

✍ M.A.M. Boersma; J.A.M. Spierts; H.S. Van Der Baan 📂 Article 📅 1980 🏛 Elsevier Science 🌐 English ⚖ 685 KB

The mass transport equation applymg to a second order gas sohd reactlon takmg place m an Isothermal spherical particle IS solved by the orthogonal collocation method, usmg 3, 5 and 8 pomt collocation The results are compared with those obtamed m earher studies usmg different assumptions and calculat