SKU: 32252023950

ZSM-23

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Description

ZSM-23Product Name Name: ZSM 23 Product Overview ZSM 23 molecular sieve is a kind of microporous molecular sieve with MTT topological structure, its pore structure is a droplet shaped 10 membered ring one dimensional channel, the size of about 0. 450. 56nm. ZSM 23 molecular sieve has been widely used in the fields of isomerization dewaxing and alcohol to olefin due to its unique unidirectional channel characteristics and adjustable acidity. Technical

Product Name

Name: ZSM-23


Product Overview

 

ZSM-23 molecular sieve is a kind of microporous molecular sieve with MTT topological structure, its pore structure is a droplet shaped 10-membered ring one-dimensional channel, the size of about 0.45×0.56nm. ZSM-23 molecular sieve has been widely used in the fields of isomerization dewaxing and alcohol to olefin due to its unique unidirectional channel characteristics and adjustable acidity.


Technical Parameter

 

Length: 100-250 nm

Diameter: 40-50 nm

 

Product Features

 

Unique pore structure: The pore structure of ZSM-23 molecular sieve is a droplet shaped 10-membered ring one-dimensional through channel, the size of about 0.45×0.56nm, which makes it have a unique shape selection catalytic performance.

High catalytic activity and selectivity: Due to its unique pore structure and adjustable acidity, ZSM-23 molecular sieve shows high catalytic activity and selectivity in many catalytic reactions, such as isomerization dewaxing, alcohol to olefin, etc.

Good stability: ZSM-23 molecular sieve has good thermal stability and hydrothermal stability, and can maintain stable catalytic performance under harsh conditions such as high temperature and high pressure.

 

Application Fields

 

Due to its unique pore structure and strong surface acid properties, ZSM-23 molecular sieve shows high catalytic activity and selectivity in many catalytic reactions, mainly used in the following fields:

Olefin oligomerization: ZSM-23 molecular sieve can be used for olefin oligomerization reaction to convert small olefin molecules to large olefin molecules.

Olefin/alkane cracking: In the olefin/alkane cracking reaction, ZSM-23 molecular sieve can promote the cracking of hydrocarbons to produce low carbon olefin.

Aromatics alkylation and isomerization: ZSM-23 molecular sieve can be used for alkylation and isomerization of aromatics to improve the yield and quality of aromatics.

Skeleton isomerization of straight-chain hydrocarbons: The molecular sieve helps to convert straight-chain hydrocarbons into branched-chain hydrocarbons, improving the properties of hydrocarbons.

Desulfurization: ZSM-23 molecular sieve can adsorb and remove sulfur in fuel, reduce sulfur content and reduce environmental pollution.

Adsorption separation: Due to its pore structure and surface properties, ZSM-23 molecular sieve can be used to adsorb and separate different components in a mixture.

Methanol to olefin: ZSM-23 molecular sieve showed good catalytic performance in methanol to olefin reaction.

Methanol to aromatic hydrocarbons: ZSM-23 molecular sieve is combined with SAPO-34 molecular sieve, which can be used in methanol to aromatic hydrocarbons reaction to improve the reaction activity.

 

 

Related Information

Room temperature; relative humidity is not more than 90%; should not be directly exposed to the air; avoid water, acid, alkali.

Please e-mail for the detailed characterization data.

E-mail:[email protected]

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SKU: 32252023950

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4.3 ★★★★★
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Product Reviews
H
Verified Purchase
Huntington Wilkinson
Carnegie, US
★★★★★ 5
Good quality
Color: Gold Band Gold Face
Not a bad quality. The size of the watch did not reflect as per pohotograph
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 24, 2025
J
Verified Purchase
James David Reyome
San Leandro, US
★★★★★ 5
Almost the perfect watch
Color: Black/Blue
I have owned three earlier models of these things going back to the days when I actually ran road races. They are brilliant pieces of work. My only complaint of them was that the start/stop/split button(s)--there were two on the older models--were too small. Well, apparently Timex listens and the two small buttons are now combined into one larger one. Probably this was done years ago but I'm only now getting back into road work, so now I get to discover it. The perfect watch? Almost. I especially like this model as my eyes are not what they used to be and the oversized face makes it easier to read. The downside to this is that it also makes the crystal easier to scratch. That's always been an issue, but I can live with it. No, the real problem with this product is, was, and apparently ever shall be, the band. Now, it could be worse, it could be a resin band (like the old ones) that will crack and break within a couple of years, but no, this is a nylon and velcro wrap style which should be just dandy, but for three glitches: 1. it's too short 2. it's too narrow (gee whiz, Timex designers, it's an oversized watch, why not a matching oversized band?) and 3. it's still resin where it attaches to the actual watch. Now, I imagine it's probably less prone to breakage in how it's implemented, but if you should choose to replace it, I can see no obvious way of removing it short of cutting it off. Really? But these are minor complaints. I doubt it would be comfortable on anyone whose wrists are much bigger than my own, but replacement bands are everywhere, and this watch will keep time with style and it's brilliant at splits. Heck, it even functions admirably as a backup for my expensive stopwatches at our regular short track stock car events. For my money (and did I mention the price is wonderful?) the Ironman is still the best at what it does, and for what it can do.
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Reviewed in the United States on November 19, 2014
S
Verified Purchase
striker
Fort Morgan, US
★★★★★ 5
Good hard use watch.
Color: Black/Silver-Tone
Review Calibration: 3 stars means it works as advertised, nothing special during use, and no amazing features. Higher stars mean better-than-expected performance and features. This is 5 stars because it is my favorite work/hard-use watch. I have been wearing one for years, and like all Timex watches, it can take a beating. I have to replace it when the band's ears get so damaged that they won't hold the band on. This has more to do with the plastic's lifespan than with a design issue. I am hard on watches. This watch normally lasts ne 7-10 years between replacements.
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Reviewed in the United States on April 27, 2026
A
Verified Purchase
Amazon Customer
Houston, US
★★★★★ 5
Great watch
Color: Black/Silver-Tone
Great watch, with many features, specially for those that travel in various time zones.
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Reviewed in the United States on May 7, 2026
M
Verified Purchase
Marc McC
Fort Morgan, US
★★★★★ 4
Typical Ironman quality
Color: Black/Silver-Tone
This is my fourth Timex Ironman watch. I own many watches, and prefer the Ironman for casual wear and sporting activities as well as swimming and snorkeling. I decided to replace an earlier model with this one rather than pay to change the battery. The Ironman has changed very little over the years since its introduction in the '80s, with the exception of cosmetic improvememnts and a larger display. I selected the "oversize" model as I was looking for a little more heft to this model. This watch fits the bill, not as chunky as my G-Shock. A pleasant surprise was the weight of the watch. This model is lightweight, another advantage over the G. It's larger than the typical Ironman model, but about the same weight. The band lacks the stiffness of some other Timex and Casio models, and is quite comfortable. Typical Ironman functions are unchanged, and the ability to "hide" various functions makes operation of the watch more efficient. There are three time zones, useful when traveling, as well as the usual chronograph/timer and alarm functions. I haven't worn the watch in the pool or ocean yet, but if experience is any guide, I expect no problems. I've never had an Ironman leak, whether during water sports or snorkeling. These are great watches for the money. I prefer 200 meter water resistance for this type of watch, but Timex has yet to build an Ironman 200m that doesn't overwhelm my wrist in weight and size. I'm not a big guy, and they are simply too large for my wrist. Looking forward to years of service with this watch. Definitely a good timepiece for the price.
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Reviewed in the United States on May 6, 2013

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