skip to main content
DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Process and composition for drying of gaseous hydrogen halides

Abstract

A process for drying a gaseous hydrogen halide of the formula HX, wherein X is selected from the group consisting of bromine, chlorine, fluorine, and iodine, to remove water impurity therefrom, comprising: contacting the water impurity-containing gaseous hydrogen halide with a scavenger including a support having associated therewith one or more members of the group consisting of: (a) an active scavenging moiety selected from one or more members of the group consisting of: (i) metal halide compounds dispersed in the support, of the formula MX.sub.y ; and (ii) metal halide pendant functional groups of the formula -MX.sub.y-1 covalently bonded to the support, wherein M is a y-valent metal, and y is an integer whose value is from 1 to 3; (b) corresponding partially or fully alkylated compounds and/or pendant functional groups, of the metal halide compounds and/or pendant functional groups of (a); wherein the alkylated compounds and/or pendant functional groups, when present, are reactive with the gaseous hydrogen halide to form the corresponding halide compounds and/or pendant functional groups of (a); and M being selected such that the heat of formation, .DELTA.H.sub.f of its hydrated halide, MX.sub.y.(H.sub.2 O).sub.n, is governed by the relationship: .DELTA.H.sub.f .gtoreq.n.times.10.1 kilocalories/mole of such hydrated halidemore » compound wherein n is the number of water molecules bound to the metal halide in the metal halide hydrate. Also disclosed is an appertaining scavenger composition and a contacting apparatus wherein the scavenger is deployed in a bed for contacting with the water impurity-containing gaseous hydrogen halide.« less

Inventors:
 [1];  [2]
  1. (New Milford, CT)
  2. (Wilton, CT)
Issue Date:
Research Org.:
ADVANCED TECHNOLOGY MATERIALS
OSTI Identifier:
867058
Patent Number(s):
4853148
Application Number:
07/029,631
Assignee:
Advanced Technology Materials, Inc. (New Milford, CT) OSTI
DOE Contract Number:  
AC01-87ER80469
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; composition; drying; gaseous; hydrogen; halides; halide; formula; hx; selected; consisting; bromine; chlorine; fluorine; iodine; remove; water; impurity; therefrom; comprising; contacting; impurity-containing; scavenger; including; support; associated; therewith; active; scavenging; moiety; metal; compounds; dispersed; mx; ii; pendant; functional; -mx; y-1; covalently; bonded; y-valent; integer; value; corresponding; partially; alkylated; reactive; form; heat; formation; delta; hydrated; governed; relationship; gtoreq; times; 10; kilocalories; mole; compound; molecules; bound; hydrate; disclosed; appertaining; apparatus; deployed; bed; hydrogen halides; gaseous hydrogen; hydrogen halide; metal halide; containing gas; remove water; covalently bonded; associated therewith; scavenger composition; moiety selected; water molecules; formula mx; halide compound; move water; containing gaseous; /252/34/423/

Citation Formats

Tom, Glenn M., and Brown, Duncan W. Process and composition for drying of gaseous hydrogen halides. United States: N. p., 1989. Web.
Tom, Glenn M., & Brown, Duncan W. Process and composition for drying of gaseous hydrogen halides. United States.
Tom, Glenn M., and Brown, Duncan W. Tue . "Process and composition for drying of gaseous hydrogen halides". United States. https://www.osti.gov/servlets/purl/867058.
@article{osti_867058,
title = {Process and composition for drying of gaseous hydrogen halides},
author = {Tom, Glenn M. and Brown, Duncan W.},
abstractNote = {A process for drying a gaseous hydrogen halide of the formula HX, wherein X is selected from the group consisting of bromine, chlorine, fluorine, and iodine, to remove water impurity therefrom, comprising: contacting the water impurity-containing gaseous hydrogen halide with a scavenger including a support having associated therewith one or more members of the group consisting of: (a) an active scavenging moiety selected from one or more members of the group consisting of: (i) metal halide compounds dispersed in the support, of the formula MX.sub.y ; and (ii) metal halide pendant functional groups of the formula -MX.sub.y-1 covalently bonded to the support, wherein M is a y-valent metal, and y is an integer whose value is from 1 to 3; (b) corresponding partially or fully alkylated compounds and/or pendant functional groups, of the metal halide compounds and/or pendant functional groups of (a); wherein the alkylated compounds and/or pendant functional groups, when present, are reactive with the gaseous hydrogen halide to form the corresponding halide compounds and/or pendant functional groups of (a); and M being selected such that the heat of formation, .DELTA.H.sub.f of its hydrated halide, MX.sub.y.(H.sub.2 O).sub.n, is governed by the relationship: .DELTA.H.sub.f .gtoreq.n.times.10.1 kilocalories/mole of such hydrated halide compound wherein n is the number of water molecules bound to the metal halide in the metal halide hydrate. Also disclosed is an appertaining scavenger composition and a contacting apparatus wherein the scavenger is deployed in a bed for contacting with the water impurity-containing gaseous hydrogen halide.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1989},
month = {8}
}

Patent:

Save / Share: