Preparation of Environment-Friendly Epoxidized Corn Oil as a Plasticizer

2014 ◽  
Vol 852 ◽  
pp. 256-261 ◽  
Author(s):  
Yuan Huai Peng ◽  
Hua Di Lin
Keyword(s):  
Hydrogen Peroxide ◽  
Ion Exchange ◽  
Exchange Resin ◽  
Corn Oil ◽  
Ion Exchange Resin ◽  
Molar Ratio ◽  
Environment Friendly ◽  
Percent Conversion ◽  
Optimized Conditions

An environment-friendly plasticizer, epoxidized corn oil was prepared by the epoxidation of corn oil with peroxyacetic acid which was generated in situ from hydrogen peroxide and glacial acetic using acidic ion exchange resin modified by zinc chloride as catalyst. The product with an epoxy oxygen content of 6.40 w% and a percent conversion to oxirane of 87.67 % was obtained under the following optimized conditions: 15 % modified ion exchange resin feed relative to the weight of corn oil, the molar ratio of 1.7 to 1 with hydrogen peroxide to double bonds, 18% acetic acid feed relative to the weight of corn oil, the reaction time of 5.5 h, the temperature of 75 °C and stirring speed of 600 rpm.

Catalytic Synthesis of Isoamyl Acetate by Ion Exchange Resin-Supported (NH4)6[MnMo9O32] • 8H2O with Waugh Structure

2013 ◽  
Vol 750-752 ◽  
pp. 1231-1234 ◽  
Author(s):  
Li Xia Wang ◽  
Shu Heng Liu ◽  
Hua Yuan ◽  
Lin Lin Guo
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Orthogonal Experiment ◽  
Catalytic Efficiency ◽  
Ion Exchange Resin ◽  
Isoamyl Acetate ◽  
Molar Ratio ◽  
Solid Catalyst ◽  
Reaction Conditions ◽  
Optimal Reaction

Ion exchange resin-supported (NH4)6[MnMo9O32]8H2O with Waugh structure is used to prepare supported solid catalyst. Performance of this catalyst is researched by means of synthesis of isoamyl acetate. Optimal reaction conditions determined by orthogonal experiment are as follows: acid-alcohol molar ratio is 2.5:1, reaction time is 120 min, catalyst dosage is 0.8 g, dosage of water-carrying agent is 2.5 ml, esterification yield reaches 95.1%. This catalyst is characterized by high catalytic efficiency, easy separation and recovery, absence of environmental pollution and being reusable, etc.

Washing procedure for mixed‐bed ion exchange resin decontamination for in situ nutrient adsorption

2000 ◽  
Vol 31 (3-4) ◽  
pp. 543-546 ◽  
Author(s):  
Nelson Thiffault ◽  
Robert Jobidon ◽  
Carol De Blois ◽  
Alison D. Munson
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Mixed Bed Ion Exchange

An in situ mini lysimeter with a removable ion exchange resin trap for measuring nutrient losses by leaching from grazed pastures

Soil Research ◽  
1994 ◽  
Vol 32 (6) ◽  
pp. 1389 ◽  
Author(s):  
K Sakadevan ◽  
MJ Hedley ◽  
AD Mackay
Keyword(s):  
Ion Exchange ◽  
Soil Solution ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Drainage Water ◽  
Alternative Methods ◽  
Nutrient Losses ◽  
Undisturbed Soil ◽  
Grazed Pastures

This study describes the construction, installation and evaluation of an in situ mini-lysimeter with a removable ion exchange resin trap for measuring nutrient losses by leaching from grazed pastures. The resin trap efficiently removed solutes from simulated drainage water at a flow rate of 14 mm h-1. Over 88% of each of the solutes was removed from synthetic nutrient solution containing 1.65 mM nitrate-N, 1.65 mM ammonium-N, 0.25 mM sulfate-S (SO2-4-S) and 0.6 mM potassium. In a further test of the system, sulfate leached in simulated rainstorm events from two undisturbed soil cores, taken from legume based pastures of contrasting superphosphate (SSP) fertilizer history following 495 mm of simulated rainfall, was all recovered using the resin trap. Seven times more SO2-4 (21.2 kg S ha-1) was leached and recovered from the resin trap of the core collected from the high fertility (HF, 375 kg SSP ha-1 year-1) site than from the low fertility (LF, 125 kg SSP ha-1 year-1) site (3.1 kg S ha-1). As part of the field evaluation of the technique, lysimeters with resin traps were placed in the field at four sites (8 lysimeters/site) contrasting in fertilizer history, landslope, and dung and urine return. Two additional lysimeters with drainage collection reservoirs (vessels) and eight soil solution samplers were placed on each site to collect drainage water and soil solution. The amount of SO2-4 present in drainage water was more closely related (1:1, R2 = 0.861) to the amount of SO2-4 collected by the resin traps over a period of 9 months than estimates made using soil solution samplers (1:1, R2 = 0.829). The advantages of the resin trap technique over alternative methods for estimating SO4-S leaching losses from field soils are discussed, as are applications of the technique for studying nutrient losses and cycling in grazed pastures.

In-situ sequestration of perfluoroalkyl substances using polymer-stabilized ion exchange resin

2022 ◽  
Vol 422 ◽  
pp. 126960
Author(s):  
Chen Liu ◽  
Jenna Chu ◽  
Natalie L. Cápiro ◽  
John D. Fortner ◽  
Kurt D. Pennell
Keyword(s):  
Ion Exchange ◽  
Exchange Resin ◽  
Ion Exchange Resin ◽  
Perfluoroalkyl Substances ◽  
Polymer Stabilized
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