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Role of catalysts in the chemical industry
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There is an overwhelming use of catalysts - a substance that changes the rate of reaction without being consumed by the reaction itself- in various industrial processes. According to certain estimates [cite-wiki10] around 90% of all “commercially produced chemical products involve catalysts at some stage in the process of their manufacture.” Chemical products worth $900 billion were generated by catalytic processes worldwide in 2005 [cite – wiki11]. The close affiliation of the catalysts and the process of catalysis to a variety of industries and the proximity of these industries with consumers raise questions regarding the application of catalysts and their effects on products.
The economic benefits of catalysts become obvious when theoretical implications of the catalysis process are understood. Manufacturing of chemical products require some kind of reaction between two reactants. The reactions are affected by a factor known as activation energy (minimum level of energy [joules] to be provided for reactants to react). Use of catalysts, in these reactions, provides an area for the reactants to react; this area helps to affect the rate at which the reaction takes place. It may also affect the Activation Energy [cite]. Catalysts provide industry with an ability to manipulate the reactions, and since the main aim of industry is associated with reducing the cost per unit of the product – use of a catalyst is aimed towards manipulating the rate of reaction so that for less reactants or energy cheaper products can be produced. However, changes or side effects in the use of catalyst usage and the effects of this on the quality of the products must be considered.
The food industry makes excessive use of catalysts; one such applica...
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...garines – that are also passed onto the consumers – the health implications are present. This raises severe ethical questions such as how much the progress of catalysts (scientific discovery) is improving the standard of lives of consumers –who are the end users of the entire scientific discovery. It also raises question regarding the political will to regulate better industries which must be in a position of reasonability when using technologies.
In conclusion it can be stated that without the use of Nickel Catalysis the industrial viability of Hydrogenation would be under question. Without hydrogenation the food industry would not be able to expand in such a large commercial sense and provide the several conveniences it does to consumers.
Works Cited
"Recognizing the Best in Innovation: Breakthrough Catalyst". R&D Magazine, September 2005, pg 20.
As a sociologist we look at two different perspectives, there is structural functional perspective and the conflict perspective. Out of the two perspectives I agree with the conflict perspective more than I do the structural functional perspective, and I’m going to use this perspective throughout my paper. I choose this perspective because as much as we want society to be “fair” and it work smoothly, it just doesn’t. We have struggle for power and I believe there are the groups that are powerful and wealthy, and there are some groups that are the working class and struggle to make it. I also picked this perspective because in the book Nickel and Dimed, Ehrenreich gave up the power and wealth to struggle with the working class to show us how truly difficult it sometimes can be.
A substantial percentage of the work on the ethics of genetically modified food has primarily centralized on its potentially nocuous effects on human health and on the rights to label
The purpose of the experiment is to study the rate of reaction through varying of concentrations of a catalyst or temperatures with a constant pH, and through the data obtained the rate law, constants, and activation energies can be experimentally determined. The rate law determines how the speed of a reaction occurs thus allowing the study of the overall mechanism formation in reactions. In the general form of the rate law it is A + B C or r=k[A]x[B]y. The rate of reaction can be affected by the concentration such as A and B in the previous equation, order of reactions, and the rate constant with each species in an overall chemical reaction. As a result, the rate law must be determined experimentally. In general, in a multi-step reac...
“How does anyone live on the wage available to the unskilled?” This is the question Barbara Ehrenreich, author of Nickel and Dimed On (Not) Getting By In America, asked herself while discussing the topic of poverty with a friend of hers’. She believed someone needed to figure this question out on their own, but she also believed that she was not fit on taking on this experiment.
Poverty and low wages have been a problem ever since money became the only thing that people began to care about. In Nickel and Dimed: On (Not) Getting By in America by Barbara Ehrenreich, she presents the question, “How does anyone live on the wages available to the unskilled?” This question is what started her experiment of living like a low wage worker in America. Ehrenreich ends up going to Key West, Portland, and Minneapolis to see how low wage work was dealt with in different states. With this experiment she developed her main argument which was that people working at low wages can’t live life in comfort because of how little they make monthly and that the economic system is to blame.
Nickel and Dimed: On (Not) Getting By in America, published in 2001 by Barbara Ehrenreich, is a book about an author who goes undercover and examines lives of the working lower class by living and working in similar conditions. Ehrenreich sets out to learn how people survive off of minimum wage. For her experiment, she applies rules including that she cannot use skills acquired from her education or work during her job search. She also must take the highest-paying job offered to her and try her best to keep it. For her search of a home, she has to take the cheapest she can find. For the experiment, Ehrenreich took on low-wage jobs in three cities: in Florida, Maine, and Minnesota.
Today, the world’s ethanol is primarily produced in Brazil using sugarcane. The second largest producer of ethanol is the United States, where it is created from corn. Ethanol has the largest production mass of all the biofuels (Powlson, Riche, and Shield, 2005). In 2003 Brazil produced 9.9 million tons, as compared to 8.4 million tons produced by the United States, and 1.75 million tons produced in Europe (Malca and Freire, 2006).
The catalytic converter is a simple yet fascinating invention that uses precious metals such as platinum palladium, and rhodium as catalyst to cause reduction and oxidation reactions that can reduce dangerous gasses produced by combustion engines by over 95% converting them into less harmful gasses. Even though catalytic converters are quite simple they are still extremely expensive, this is due to the precious metals that are used as catalysts.
"ETHICAL DEBATE: On the horns of a dilemma." Chemist & Druggist. 03 Dec. 2005: 30. eLibrary. Web. 20 Jan. 2014.
Predictions may be made about the suitability of possible catalysts by assuming that the mechanism of catalysis consists of two stages, either of which can be first:
There are five factors which affect the rate of a reaction, according to the collision theory of reacting particles: temperature, concentration (of solution), pressure (in gases), surface area (of solid reactants), and catalysts. I have chosen to investigate the effect of concentration on the rate of reaction. This is because it is the most practical way to investigate. Dealing with temperatures is a difficult task, especially when we have to keep constant high temperatures. Secondly, the rate equation and the constant k changes when the temperature of the reaction changes.
Appropriately, this motion picture correctly illustrates the amount of work, time, and money that actually goes into developing a medical innovation. In addition, this movie acts as a solid example of the grueling path one must take for permission in releasing a medical innovation to the public. Writing for the journal The Scientist, Jef Akst stated that the film acted as a good depiction of the “hard to swallow fiscal issues of drug development” (thescientist). However, this painfully hard process exists for good reasons; they must weed out the ideas that can not be safely practiced in modern society. Also, the regulations ensure that each innovation, whether drug, therapy, or procedure, will benefit the consumer more than the side effects could harm them. Moreover, the benefits of the innovations, as previously mentioned, must outweigh the costs for the patient and practicer for maximum
The catalytic process occurs at lower temperature anf offers higher selectivity but requires frequent regeneration of the catalyst. Then, the products are cooled and introduced into a pair of separators which separate the unreacted hydrogen. The unreacted hydrogen is compressed and recycle back to the feed and reactor. The products that leaving the separators are heated before introduced into a distillation column which the toluene is separated from the stream and recycle back to the...
The word “photocatalysis” is of Greek origin and composes of two parts : the prefix “photo” (phos : light) and the word “catalysis” (katalyo : break apart,decompose). The main difference between a conventional thermal catalyst and a photocatalyst is that the former is activated by heat whereas the latter is activated by photons of appropriate energy.
To control the rates of chemical reactions is imperative to the continued existence of our species. Controlled chemical reactions allow us to move forward in society, constantly. We find new ways to provide light and heat our homes, cook our food, and pursue in crafts that benefit our society. There are, however, just as there are advantages, disadvantages to the efficiency of controlling the rate of reactions, which in some cases can be fatal to our scientific development and progression. The growth of humankind necessitates that we must be able to control the rate of chemical reactions.