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Merck
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MX1583D

Supelco

Molecular Sieve, Type 3A

bead size 8-12 mesh

别名:

Molecular Sieve

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About This Item

UNSPSC代码:
23201100
价格与库存信息目前不能提供

表单

beads

珠子尺寸

8-12 mesh

颜色

tan

运输

ambient

储存温度

room temp

相关类别

一般描述

Molecular Sieve, Type 3A is a synthetic crystalline aluminosilicate (potassium form crystal structure or type A zeolite) with an effective pore diameter of 3 Å. It is used as an effective adsorbent. It adsorbs molecules having a kinetic diameter of less than 3 Å and excludes molecules with a kinetic diameter of greater than 3 Å.[1][2][3]

应用

Molecular Sieve, Type 3A can be used:
  • As a selective adsorbent for the adsorption of water and ammonia.[4]
  • In drying polar liquids such as methanol and ethanol.[2][4]
  • In commercial dehydration of unsaturated hydrocarbon streams, including cracked gas, propylene, butene, and natural gas.[5][6][7]

分析说明

Color: Tan
Form: Beads
Identification (potassium): To pass test
Mesh size (8-12): 80% min

象形图

Corrosion
GHS05

警示用语：

Danger

危险声明

H314

危险分类

Eye Dam. 1 - Skin Corr. 1B

储存分类代码

8B - Non-combustible corrosive hazardous materials

WGK

WGK 1

闪点(°F)

Not applicable

闪点(°C)

Not applicable

分析证书(COA)

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Enrichment of ammonia concentration from aqua-ammonia vapors by using 3A molecular sieve
Chiou Jenq-Shing, et al.
Energy Conversion and Management , 50(10), 2665-2669 (2009)
Optimization of manganese reduction in biotreated POME onto 3A molecular sieve and clinoptilolite zeolites
Jami Mohammed S, et al.
Water Environment Research : A Research Publication of the Water Environment Federation, 88(6), 566-576 (2016)
Effect 3A and 5A molecular sieve on alcohol-assisted methanol synthesis from CO2 and H2 over Cu/ZnO catalyst
Boonamnuay T, et al.
International Journal of Hydrogen Energy (2021)
Carbon dioxide capture using a zeolite molecular sieve sampling system for isotopic studies (13C and 14C) of respiration
Hardie SML, et al.
Radiocarbon, 47(3), 441-451 (2005)
THE REDUCING EMISSIONS OF GASES WITH GREENHOUSE EFFECT USING THE METALLIC CATALYSTS SUPPORTED. PRODUCTION TECHNOLOGY, PREPARATION, PHYSICAL AND CHEMICAL CHARACTERIZATION.
Constantinescu M and Bucura F
Progress of Cryogenics and Isotopes Separation, 13(2) (2010)
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Questions

1–4 of 4 Questions  

  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

      Helpful?

  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

      Helpful?

  3. Are this 3A molecular sieves food grade?

    1 answer

    1. No, this product is not food-grade. Currently, a food-grade product option is not available.

      Helpful?

  4. Is there a regeneration procedure for these Molecular Sieve dessicants ?

    1 answer

    1. Molecular sieves can be dried in a drying oven above 250°C to a water content of 2-3 g/100 g. The remaining water can be removed at 300-350°C using a vacuum oil pump (10-1-10-3 mbar), whereby, as is usual, a cold trap containing carbon dioxide coolant or liquid air should be connected. Water pumps, due to their high partial water vapor pressure, are completely unsuitable for this purpose. For safety reasons, molecular sieves that have been used to dry solvents should be freed from possible solvent by mixing with water before regeneration. This can be carried out as often as required; the maximum regeneration temperature is 450°C.

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