|
|
|
| SCALE INHIBITION OF METHYLENEPHOSPHONIC ACIDS WITH (HO)_2OPCH_2(?)—N[CH_2PO(OH)_2]_2 STRUCTURE |
| Zhou Bensheng Ma Jiaxiang and Chen Shufang (Nanjing Institute of Chemical Technology) |
|
|
|
|
Abstract A new method——bubble method is used to study the scale inhibition of four methylenephosphonic acids (MP) with (HO)_2OPCH_2——N[CH_2PO(OH)_2]_2 structure (n=0,1,2,3)——ATMP (Aminotrimethylenephosphonic acid), EDTMP (Ethylenediaminetetramethyleneposphonie acid), DETPMP (Diethylenetriaminepentamethylenephosphonic acid) and TETHMP (Triethylenetetraaminehexamethylenephosphonic acid). Results show that all these metb.ylenephosphonicacids have significant scale inhibition ability and threshold effect. The scale inhibition ability of methylenephosphonie acids increases with the number of functional group—CH_2PO(OH)_2 in their molecules (m). According to their scale inhibition ability,these methylenephosphonic acids may be arranged in the following order: TETHMP>DETPMP>EDTMP>ATMP m=6 m=5 m=4 m=3 The contribution of every—CH_2PO(OH)_2 group in these methylenephosphonic acid molecules to scale inhibition is about the same.
|
|
Received: 25 June 1991
|
[1] 徐寿昌等编,工业冷却水处理技术,化学工业出版社,1984年
[2] Drew Chemical Corporation, Principles of Industrial Water Treatment, 4th Ed., Drew Chemical Corporation, 1981
[3] [美]贝兹公司编,秦裕衍等译,工业水处理手册,化学工业出版社,1982年
[4] Hatch,G. B.,Ralston,P. H.,Materials Performance, 11(1) , 39(1972) |
| No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
