Catalysis
Catalysis (/kəˈtælᵻsᵻs/) is the increase in the rate of a chemical reaction due to the participation of an additional substance called a catalyst (/ˈkætəlᵻst/). With a catalyst, reactions occur faster and require less activation energy. Because catalysts are not consumed in the catalyzed reaction, they can continue to catalyze the reaction of further quantities of reactant. Often only tiny amounts are required.
Technical perspective
In the presence of a catalyst, less free energy is required to reach the transition state, but the total free energy from reactants to products does not change. A catalyst may participate in multiple chemical transformations. The effect of a catalyst may vary due to the presence of other substances known as inhibitors or poisons (which reduce the catalytic activity) or promoters (which increase the activity). The opposite of a catalyst, a substance that reduces the rate of a reaction, is an inhibitor.
Catalyzed reactions have a lower activation energy (rate-limiting free energy of activation) than the corresponding uncatalyzed reaction, resulting in a higher reaction rate at the same temperature and for the same reactant concentrations. However, the detailed mechanics of catalysis is complex. Catalysts may affect the reaction environment favorably, or bind to the reagents to polarize bonds, e.g. acid catalysts for reactions of carbonyl compounds, or form specific intermediates that are not produced naturally, such as osmate esters in osmium tetroxide-catalyzed dihydroxylation of alkenes, or cause dissociation of reagents to reactive forms, such as chemisorbed hydrogen in catalytic hydrogenation.
Catalyst (disambiguation)
A catalyst is a substance which increases the rate of a chemical reaction.
Catalyst may also refer to:
Buildings
Economics and finance
Events
Media and entertainment
Games
Literature and publications
Catalyst (TV program)
Catalyst is the ABC's primary science journalism television series and the only science show on primetime television in Australia. Launched in 2001, it replaced Quantum, which had ceased the previous year. Catalyst is regularly broadcast on ABC 1 at 8:00 pm on Tuesdays and at 11:30 am Saturdays. Also repeated on ABC News 24 on Saturdays at 4:30 pm.
Catalyst celebrated its tenth year of production in 2010.
Description
The show broadcasts stories on scientific themes, and in particular significant recent developments and discoveries. It focuses primarily on stories relevant to Australia, but the series covers international developments as well. It attempts to convey information in a way that is not only accurate but also interesting and informative to the general population, often discussing the ethical, political, and other implications of scientific discoveries and research as well as the discoveries themselves.
The show's website describes it as follows:
Each week Catalyst brings you stories from Australia and around the world.
Podcasts:
Catalyst
ALBUMS
- The Network released: 2011
- Shot Heard Round the World released: 2011
- The High Exhaulted released: 2010
- Newport Authority released: 2007
- Cruise Control Mixtape, Volume 1 released: 2004
- The Jerk, Volume 0 released:
Newport Authority
Released 2007- Newport Authority (intro)
- How I Get Down (remix)
- 1 Call
- Interlude
- Do It Man
- The Radar
- Veteran
- Good God (interlude)
- Hood Tales
- He Gave His Life
- Hate All You Want
- The Growler
- Interlude
- Block Shit
- War
- U Must
- Casuality
- Interlude
- What Happened to the Game
- Not a Fucking Game (interlude)
- All a Game
- Interlude
- If You
- Swordfish
- Yeah
- Swordfish
Cruise Control Mixtape, Volume 1
Released 2004- Cruise Control Intro (live From the C/O)
- I'm Back (Just for a Second)
- Jokes on You
- Roc Star
- Official Bangers
- Beautiful Trainwreck
- Twist It
- Money's Everywhere (Station Identification)
- Clap!
- Thieve's World
- Happy Hour (P.Y.P.)
- Pull-Out Man
- That's a Wrap
- Kick Down the Door
- Size 12's
- Not With Me
- (O.H.) Ten Times
- Retarded
- He Burns Trees
- Midnight Run
- Words From Grace
- Alright
- Firin' (Target Practice)
- Spew the Fire
- Jeah, Jeah, Jeah
- Deja Vu (Once Again)
- Rindin' Out (Shouts)
The Jerk, Volume 0
- Intro
- Takin' Gwop
- Money for Nuthin'
- That's Y
- Slow Down
- Big Man on Campus
- Fire Shots
- A Word From Katt Williams
- Colors '07
- Hungry
- Best Seller
- Lights Out
- The Music 'n Me
- Chill at the Bar
- Grand Larceny
- Take Notes
- Waiting 2 Inhale
- Missing (Young Guru mix)
- Time Doesn't Stop
- A Word From Afrika Bambaataa
- Aa Meeting
- The Zone
- Paper Chase
- Shinin'
- Crazy (As I Used 2 B)
- Jerry's Final Word
Catalyst
ALBUMS
- Nova Tunes 01_10 released: 2010
- Nu Jazz Meets Brazil: The Dom Um Romão Remix Project released: 2002
- 2000 Black: The Good Good released: 2001
- Nova Tunes 01 released: 2000
Nova Tunes 01_10
Released 2010- I Know a Place (Shades of Black mix)
- Sing It Back (Herbert's Tasteful dub)
- Failure
- Enchant Me (radio edit)
- Got It Going On (Aim remix)
- Brother (San Paolo mix)
- All My Favourite People (Stay With Me) (Tom Middleton mix)
- Africa
- Burnin' (Sound Boy remix)
- Silly Games
- Eve
- Velvet Blues II (2nd Transmission Apparently About 1st)
- Black & Blue
Nova Tunes 01
Released 2000- I Know a Place (Shades of Black mix)
- Sing It Back (Herbert's Tasteful dub)
- Failure (radio edit)
- Enchant Me (radio edit)
- Got It Going On (Aim remix)
- Brother (San Paolo mix)
- All My Favourite People (Stay With Me) (T. Middleton mix)
- Africa
- Burnin' (Sound Boy remix)
- Silly Games, Part 1
- Eve
- Velvet Blues II (2nd Transmission Apparently About 1st)
- Black and Blue
Catalyst
ALBUMS
- Hypnotrance 4: The Intergalactic Trance Collection released: 1996
- The Ultimate Dream Collection released: 1996
- Platipus Records, Volume TwO released: 1995
Catalyst
ALBUMS
- Cats in the Well released: 2006
- Dogs in the Oven released: 2003
Catalyst
ALBUMS
- Gowned & Bagged: Wellington Youth Compilation released: 2000
Catalyst
ALBUMS
- A Tear and a Smile / Perception released:
- Catalyst / Unity released:
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by God Module
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by Oceansize
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by Val Emmich
-
by Feable Weiner
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by ANNA NA
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by Alex Kelly
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by ANNA NALICK
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by Byzantine
-
by Epidemic
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by Will Joseph Cook
-
by Slayer
Catalyst
by: God ModulePsychokinesis and these delusions are just all tied together
Think about it moving and make it move
Don't hold back
Concentrate
Concentrate!
You're lying to me
You're lying because it happens
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