Composite particles comprising polymeric adsorbent for aldehydes
A technology of composite particles and polymers, applied in the fields of alkali metal compounds, dispersed particle separation, alkali metal oxides/hydroxides, etc.
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment
[0262] Material
[0263] Materials with their sources are listed in Table 1. All materials were purchased from commercial sources and used as-is unless otherwise noted.
[0264] Table 1: List of materials
[0265]
[0266]
[0267] Gas adsorption analysis
[0268] Porosimetry was performed using an Accelerated Surface Area and Porosimetry (ASAP) 2020 System from Micromeritics Instrument Corporation (Norcross, GA) (Norcross, GA). rate and gas adsorption experiments. The adsorbate is of ultrahigh purity. Typical methods used to characterize porosity within the exemplified materials are described below. Pass 50 to 250 milligrams of material through the analytical port of ASPA 2020 under ultra-high vacuum (3 to 7 microns Hg) in a half-inch (1.3 centimeter (cm)) diameter sample tube from Micromeritics Heat degassing to remove residual solvents and other adsorbates. The degassing process of the precursor polymer material was 3 hours at 150°C.
[0269] Use low pre...
preparation example 1
[0276] Preparation Example 1: Preparation of Precursor Polymer Material
[0277] In a 2 liter (L) Parr stainless steel pressure vessel, 177.11 g (1.09 mol) of divinylbenzene, 240.05 g (2.45 mol) of maleic anhydride (MA), and 4.17 g (16.8 mmol) of VAZO 52 were dissolved in 625.92 g in ethyl acetate (EtOAc). The polymerizable composition had 40.0 wt% solids in EtOAc and contained a monomer mixture (34.0 wt% DVB, 57.5 wt% MA, and 8.5 wt% styrenic monomers) and 1 wt% VAZO 52 (monomer based total weight). Nitrogen was bubbled through the polymerizable composition for 15 minutes. The pressure vessel was then sealed and placed in a water bath at 60°C. The polymerizable composition was heated at this elevated temperature for 18 hours. The white precipitate formed was isolated by vacuum filtration and washed with EtOAc. The solid was placed in a 4 L Erlenmeyer flask, and 2.0 L of EtOAc was added to the flask. The solid was allowed to stand in EtOAc at room temperature for 1 hou...
preparation example 2
[0278] Preparation Example 2: Preparation of Polymer Sorbent
[0279] The precursor polymer material described in Preparation 1 was treated with ethylenediamine (EDA). More specifically, 57 mL (854 mmol) of EDA was combined with 230 mL of ethanol (EtOH) in a 1 L jar. To this mixture was added 35 g of the above precursor polymer material which had been passed through U.S. Standard Test No. 120 and No. 170 wire mesh screens (ASTM E-11 standard; Hogentogler and Co., Columbia, MD) prior to collection of the isolated material. ., Inc. (Hogentogler and Co., Inc., Columbia, MD)) and Meinzer II shaking sifter (CSC Scientific Company (CSC Scientific Company, Inc., Fairfax, VA) of Fairfax County, Virginia ) operation for 15 minutes to separate and sieve to a particle size range of 120×170 mesh.
[0280] The jar was then capped and placed in a sand bath at 80°C. The suspension was heated at this elevated temperature for 18 hours. The solid was isolated by vacuum filtration and wash...
PUM
| Property | Measurement | Unit |
|---|---|---|
| diameter | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
| particle size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More