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382280

Sigma-Aldrich

Silver-exchanged zeolite

granular, +20 mesh

Synonym(s):

Ag

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100 G
$390.53

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25 G
$144.00
100 G
$390.53

About This Item

Linear Formula:
Ag84Na2[(AlO2)86(SiO2)106] · xH2O
MDL number:
MFCD00132848
UNSPSC Code:
12161600
NACRES:
NA.22

$144.00

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form

granular

composition

Ag, 35%

reaction suitability

core: silver
reagent type: catalyst

particle size

+20 mesh

mp

>500 °C (lit.)

density

1.07 g/mL at 25 °C (lit.)

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General description

Silver-exchanged zeolite selectively removes halogens from gas streams and also serves as catalyst.[1]

Application

Silver-exchanged zeolite is used:
  • As a catalyst in the low-temperature CO isotopic scrambling reaction.[1]
  • To capture radioiodine from the vapor phase, which is then thermally converted into silver sodalite.[2]

pictograms

Exclamation mark
GHS07

signalword

Warning

Hazard Classifications

Acute Tox. 4 Inhalation - Eye Irrit. 2 - STOT SE 3

target_organs

Respiratory system

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

dust mask type N95 (US), Eyeshields, Gloves

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Certificates of Analysis (COA)

Lot/Batch Number
MKCX1932
MKCW3551
MKCT0306
MKCS0213
MKCK0553

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Silver iodide sodalite--Wasteform/Hip canister interactions and aqueous durability
Maddrell ER, et al.
Journal of Nuclear Materials, 517, 71-79 (2019)
Silver-catalyzed low-temperature CO isotopic scrambling reaction: 12 C 16 O+ 13 C 18 O? 12 C 18 O+ 13 C 16 O
Lagunov O, et al.
Physical Chemistry Chemical Physics, 14(7), 2178-2218 (2012)

Questions

  1. For silver exchanged zeolite (product ID 382280), what zeolite structure is used in this product? HZSM-5? Beta? some other structure? Thanks for any info you can provide.

    1 answer

    1. This product has a special zeolite structure containing supercages within its crystalline structure which are especially large and uniform in size. These cavities and their large entrances (pores) allow extremely large capacity for trapping contaminants and maximum utilization of the exchanged silver cations.

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