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Questions tagged [applied-chemistry]

Chemical processes and theories being used in practical and experimental applications.

26 questions with no upvoted or accepted answers
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142 views

New finding in cobalt compound that absorbs oxygen - is it really a breakthrough?

Very recently Chemical Sciences published results of the discovery of a new cobalt compound that can absorb oxygen at presumably a higher capacity than what has been achievable before. The paper is ...
5
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0answers
128 views

Where is my antimony going?

I work in a trace metals laboratory operating an ICP-OES. I've been having some trouble with the recovery of antimony in a weak $\ce{HCl}$ solution post-digestion. The antimony is part of a mix of ...
4
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69 views

ZnO spontaneous combustion during transport

I found your contact information researching $\ce{ZnO}$ reactions. I was hoping you could please help me or orient me in the right direction to find an answer to my problem. The company I work for ...
4
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0answers
104 views

Why is my rusting metal chainlink fence glowing bright orange and sparking?

This is a really practical question, but I can't find anything on Google. My metal chainlink fence is rusting and I have noticed that where the metal from one wire makes contact with another wire ...
3
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0answers
39 views

Particle size-energy distribution

I am not chemist, I am mathematician and interested in Population Balance Equations. I have a question about particle size-(breakage) energy distribution which mentioned in this article: http://www....
3
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0answers
35 views

Coating applied to plastic (polymer suitable for straws) to repel carbon dioxide to prevent “floating”

We are four students currently finalizing our last exam-project before our bachelor. We confirmed our hypothesis that straws floating to the top of your drink is a "problem" from our survey. Our ...
3
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0answers
49 views

Graph of compounds/reactions used on the industrial scale

I'm looking for a machine-readable database describing industrially useful reactions in terms of inputs, outputs, and (possibly) catalyzers etc. for a large portion of, or (much more preferable) the ...
2
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0answers
149 views

Carbon monoxide from activated charcoal filters

We use activated charcoal in air filters of the ventilation system to remove pollutant vapours from the exhaust air. Before the filters, the air is heated a bit to avoid condensation of water. ...
2
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0answers
143 views

Why was rhenium used as an igniter in flash bulbs?

It looks like it typically had a current passed though it to ignite zirconium threads. What properties of rhenium made it the best metal to use for this?
2
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29 views

Bonding Carbon Fiber to Metal

I have an application for a very thin, strong, electrical conductor that need to act as a (almost) frictionless support "rope". Typically materials like tungsten wire or platinum-iridium alloys have ...
2
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0answers
71 views

Reactor mass balance with solid feed and overflow

I am modeling a lime slaker which is basically a stirred tank reactor with two separate feeds: 1. CaO feed screw (powder) 2. H2O binary valve (liquid) These react according to the reaction: $\ce{CaO(...
2
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0answers
108 views

Effectiveness of getters to keep gasses sulfur free

My engineering task poses a problem with sulfur damaging electronic components. There are enclosed gas volumes which contain sensitive electronic devices as well as NBR sealings and gaskets. The ...
2
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94 views

How is N to C ratio measured in forming austenitic stainless steel?

Nitrogen is the future hope of stainless steel industry; since in the production of austenitic steel it can even completely replace Nickel (which is relatively very expensive) in some cases and for ...
2
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0answers
491 views

speeding up etching process of a copper board

Background: I use Sodium persulfate to etch a copper board to manufacture home made Printed Circuit Board (PCB). On the etching powder's plastic, it is written that: 1.5-2dl of etch powder in 1 ...
1
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95 views

Why is paper sometimes yellow?

Where I'm from, most paper you find/get at stores has this yellowish tinge. Why is it yellow and not white? In my chemistry book it's mentioned that paper manufacturers "refine" paper from wood pulp, ...
1
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0answers
31 views

Boron nitride polymerization with silicon based molecules

Since boron nitride is similar to carbon hexagonal structures and silicon is a main component of inorganic polymers. Is it possible to make it from a polymer under certain conditions, if so what ...
1
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27 views

Calculating amount of alkali additions to get desired pH in (hard) cider

This is linked to my question over on the HomeBrew SE site: https://homebrew.stackexchange.com/questions/18837/reduce-acidity-of-hard-cider I haven't done chemistry since I was 17/18 but I remember ...
1
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0answers
55 views

Manufacturing coloured crystal glass using gold nanoparticles

I came across this video which shows how a crystal chandelier is made. I recommend that anyone reading this post should watch it; it is quite fascinating. Anyway, at about the 2:15 mark, the video ...
1
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0answers
338 views

How do I create a transparent liquid for ferrofluid display?

Hello~ I am a media art artists working in Korea. Recently, create a kinetic artwork using ferrofluid. I need to create an artificial pond with a diameter of 3 meters. So I need a lot of suspension ...
1
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0answers
135 views

How can I get rid of 700 million tons of chlorine gas?

I am conducting a thought experiment in which 40 million tons of hydrogen are supplied through saltwater electrolysis each year, creating 700 million tons of chlorine gas (Cl2) and 800 million tons of ...
1
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0answers
66 views

Hot-side and Cold-side rechargeable chemical compound

I am wondering if such a chemical/material exists which, upon triggering, becomes cold on one side and hot on the other in which after all the chemical bonds are broken/built (however it would work), ...
1
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0answers
39 views

Can there be gaps in autoignition temperatures?

I recently saw a request for solids that auto-ignite between 80C and 160C. I can't find any, and none have yet been suggested. Which leads me to the theoretical question: Is it possible for there to ...
1
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51 views

Resources where I can find approachable applied literature to understand general chemistry topics?

I am trying to find resources where I can learn about general chemistry topics outside the scope of a textbook, preferably in primary literature. Note, I have read through a general chemistry text and ...
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0answers
863 views

What is the best invisible ink for clothing?

I am interested in writing and revealing a message in invisible ink for theatrical purposes. I found a list of potential compounds here but I am having a hard time prioritizing which to experiment/...
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30 views

Which is the more effective home insecticide? Boric acid or borax?

I recall my late father introducing me to one of either boric acid or borax... as a relatively low human toxicity very effective insecticide. The thing is, I cannot remember which chemical my father ...
0
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86 views

distillation of aqueous CAN solution for the purpose of a reversible and strong endothermic reaction in cool packs

I know calcium ammonium nitrate (CAN) is used for cold packs. By bending a small metal plate the salt gets dissolved in water (separated pack) and this process is endothermic. I would like to heat ...