Redox polymerization: Kinetics of polymerization of acrylonitrile initiated by the system 2,2′-thiodiethanol/trichloroaquobipyridylmanganese(III) in dilute sulfuric acid

1982 ◽  
Vol 27 (6) ◽  
pp. 2229-2237 ◽  
Author(s):  
Athipettah Jayakrishnan ◽  
Mahadevan Haragopal ◽  
Venkatanarayana Mahadevan
Keyword(s):  
Sulfuric Acid ◽  
Polymerization Kinetics ◽  
Kinetics Of Polymerization ◽  
Redox Polymerization ◽  
Dilute Sulfuric Acid ◽  
Kinetics Of

Evaluation of the Kinetics of Xylose Formation from Dilute Sulfuric Acid Hydrolysis of Forest Residues ofEucalyptusgrandis

2007 ◽  
Vol 46 (7) ◽  
pp. 1938-1944 ◽  
Author(s):  
Eliana V. Canettieri ◽  
George J. M. Rocha ◽  
João A. Carvalho, ◽  
João B. A. Silva
Keyword(s):  
Sulfuric Acid ◽  
Acid Hydrolysis ◽  
Forest Residues ◽  
Dilute Sulfuric Acid ◽  
Kinetics Of ◽  
Hydrolysis Of

Effect of the structure of alkyllithium on the polymerization kinetics of isoprene

1984 ◽  
Vol 49 (10) ◽  
pp. 2269-2274 ◽  
Author(s):  
U. D. N. Bajpai ◽  
Miroslav Kašpar ◽  
Jiří Trekoval
Keyword(s):  
Induction Period ◽  
Polymerization Kinetics ◽  
The Other ◽  
Kinetics Of Polymerization ◽  
Reaction Orders ◽  
Kinetics Of

The kinetics of polymerization of isoprene in benzene initiated with ethyl-, propyl-, butyl-, hexyl-, octyl-, 2-butyl-, 3-hexyl-, 2-octyl-, and 6-methylheptyllithium was investigated. With the exception of ethyllithium , a distinct initial induction period decreasing steeply with increasing concentration of the initiator was observed for all n-alkyllithium initiators. No induction period was observed with the other initiators. The reaction orders decreased at the highest concentrations for most of the initiators, sometimes even to negative values. In the case of ethyl-, 2-butyl- and octyl-lithium this phenomenon has not been observed in the range investigated.

Vinyl polymerization: Kinetics of Ce(IV)–acetophenone-initiated polymerization of acrylonitrile in acetic–sulfuric acid mixtures

1978 ◽  
Vol 16 (2) ◽  
pp. 391-397 ◽  
Author(s):  
Anuradha Rout ◽  
Swoyam P. Rout ◽  
Nigamananda Mallick ◽  
Baishnab C. Singh ◽  
M. Santappa
Keyword(s):  
Sulfuric Acid ◽  
Polymerization Kinetics ◽  
Vinyl Polymerization ◽  
Kinetics Of

Kinetics of Furfural Production from Corn Cob in γ-Valerolactone Using Dilute Sulfuric Acid as Catalyst

2017 ◽  
Vol 5 (10) ◽  
pp. 8587-8593 ◽  
Author(s):  
Xiaoyun Li ◽  
Qingling Liu ◽  
Chunhui Luo ◽  
Xiaochao Gu ◽  
Lefu Lu ◽  
...  
Keyword(s):  
Sulfuric Acid ◽  
Corn Cob ◽  
Dilute Sulfuric Acid ◽  
Kinetics Of ◽  
Furfural Production

The Meyer Reaction of Phenylnitromethane in Acid. II. Reactions in Acid of Benzonitrile Oxide and Benzohydroxamic Acid

1971 ◽  
Vol 49 (21) ◽  
pp. 3489-3492 ◽  
Author(s):  
J. T. Edward ◽  
P. H. Tremaine
Keyword(s):  
Sulfuric Acid ◽  
Room Temperature ◽  
Detailed Mechanism ◽  
Benzohydroxamic Acid ◽  
Dilute Sulfuric Acid ◽  
Rate Profile ◽  
Kinetics Of ◽  
Hydrolysis Of

The kinetics of the transformation of benzonitrile oxide in dilute sulfuric acid into benzohydroxamic acid have been followed by u.v. spectrophotometry at a temperature near room temperature. A mechanism is proposed on the basis of the effects of substituents and sulfuric acid concentration.The rate profile for the hydrolysis of benzohydroxamic acid in hot dilute sulfuric acid has been obtained.The results of these studies are applied to the detailed mechanism of the Meyer rearrangement – hydrolysis of phenylnitromethane in acid.

Influence of microwaves on the leaching kinetics of uraninite from a low grade ore in dilute sulfuric acid

2016 ◽  
Vol 313 ◽  
pp. 9-17 ◽  
Author(s):  
V. Madakkaruppan ◽  
Anitha Pius ◽  
Sreenivas T. ◽  
Nitai Giri ◽  
Chanchal Sarbajna
Keyword(s):  
Sulfuric Acid ◽  
Low Grade ◽  
Leaching Kinetics ◽  
Dilute Sulfuric Acid ◽  
Kinetics Of

Leaching of Niobium from Low-Grade Refractory Ore Using H2SO4 Roast System

2014 ◽  
Vol 997 ◽  
pp. 651-654 ◽  
Author(s):  
Biao Wu ◽  
He Shang ◽  
Wen Cheng Gao ◽  
Jian Kang Wen
Keyword(s):  
Particle Size ◽  
Sulfuric Acid ◽  
Weight Ratio ◽  
Dissolution Kinetics ◽  
Low Grade ◽  
Mass Ratio ◽  
Improved Method ◽  
Dilute Sulfuric Acid ◽  
Roasting Temperature ◽  
Kinetics Of

A new improved method is proposed for the leaching and extraction of niobium from a low-grade refractory niobium–tantalum ore.The ore was roasted and decomposed with concenrated H2SO4 then leached with dilute sulfuric acid. The effects of various factors, such as roasting temperature and time, acid to ore mass ratios,as well as particle size, on the dissolution kinetics of niobium were comprehensively investigated. The optimal conditions were particle size-38μm, roasting temperature 300°C,reacting time 2h and acid to ore mass ratio 1:1. The roasting residue reacted for 2 h with sulfuric acid in the ore/acid weight ratio of 3:1 at 90°C, the niobium was recoveried as high as 90.3%.

Sign in / Sign up

Export Citation Format

Share Document