✦ LIBER ✦

Evolution of pore structure of high-ash char during activation

✍ Scribed by G.Q. Lu

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 226 KB
Volume: 73
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(94)90203-8

No coin nor oath required. For personal study only.

✦ Synopsis

Experimental results are presented for pore structure evolution in high-ash char during activation with COZ, H,O and air. Surface areas and pore size distributions of the char at various activation times are reported. It is shown that activation with H,O results in the most surface area and micropore volume, and air the least.

📜 SIMILAR VOLUMES

Evolution of pore structure and active s

Evolution of pore structure and active surface areas of coal and char during hydrogenation

✍ René Cyprès; Dominique Planchon; Colette Braekman-Danheux 📂 Article 📅 1985 🏛 Elsevier Science 🌐 English ⚖ 432 KB

A Belgian coal (Beringen) has been used in a fundamental study of the changes in pore structure and active surface area during hydrogenation. The coal was devolatilized under N, and then hydrogenated at constant temperature up to various conversion yields. Reactivities of the chars were determined b

Evolution of char chemistry, crystallini

Evolution of char chemistry, crystallinity, and ultrafine structure during pulverized-coal combustion

✍ Kevin A. Davis; Robert H. Hurt; Nancy Y.C. Yang; Thomas J. Headley 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 790 KB

The carbonaceous structure of partially reacted char samples, generated by direct injection of pulverized coal into a laboratory entrained flow reactor, was characterized by four techniques: elemental analysis, carbon dioxide vapor adsorption, x-ray diffraction, and fringe-imaging using high-resolut

The relationship between specific reacti

The relationship between specific reactivity and the pore structure of coal chars during gasification

✍ A. de Koranyi 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 611 KB

Measurements of porosity and of reactivity to CO? have been made on chars by pyrolyzing three British bituminous coals of medium rank (Markham Main, Manvers Barnborough, and Manvers Wath). The porosity measurements were made by gravimetric adsorption of CO, at 195 K. Resulting isotherms were analyse

Evolution of Nanoscale Pore Structure in

Evolution of Nanoscale Pore Structure in Coordination Polymers During Thermal and Chemical Exposure Revealed by Positron Annihilation

✍ Ming Liu; Antek G. Wong-Foy; Richard S. Vallery; William E. Frieze; Jennifer K. 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 367 KB

Evolution of structural damage in high-p

Evolution of structural damage in high-purity aluminum alloys during ion irradiation and the following heat treatments

✍ N. Kamigaki; S. Furuno; K. Hojou; K. Izui; T. Kino 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 705 KB

Thermodynamic study of high-pressure ads

Thermodynamic study of high-pressure adsorption of methane on activated carbons: The effect of oxidation on pore structure and adsorption energy heterogeneity

✍ Jacek Jagiełło; Prashant Sanghani; Teresa J. Bandosz; James A. Schwarz 📂 Article 📅 1992 🏛 Elsevier Science 🌐 English ⚖ 732 KB

The effects of oxidation of activated carbons are studied by means of high-pressure methane adsorption. Decreases in amounts adsorbed and adsorption enthalpies after oxidation are observed. Thermodynamic analysis of adsorption isotherms using the virial-type thermal equation of adsorption is present