New cation exchanger prepd. from pitch - has controlled sulphonic and carboxylic acid gp. contents, used as catalyst or soil conditioner

(A) Cation exchangers, which are produced from pitch and which have controlled sulphonic and carboxylic acid gp. contents and controlled porosity, are new. (B) Prodn. of the cation exchangers comprises (a) sulphonating heat treated pitch with conc. sulphuric acid or oleum; (b) oxidising with aq. hyd...

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Bibliographische Detailangaben

1. Verfasser:	PREISS, HENRY, O-1190 BERLIN, DE
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOUNDS THEREOF DISPOSAL OF SOLID WASTE INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL RECLAMATION OF CONTAMINATED SOIL RECLAMATION OF CONTAMINED SOIL SOIL THEIR RELEVANT APPARATUS TRANSPORTING
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