Journal
AICHE JOURNAL
Volume 55, Issue 7, Pages 1766-1770Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/aic.11775
Keywords
temperature integral; approximation; nonisothermal; kinetic analysis
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Funding
- China NSFC [50806070, 50576090]
- New Century Excellent Talents in University
- SKLFS
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The generalized temperature integral integral(T)(0) T(m) exp(-E/RT)dT frequently occurs in nonisothermal kinetic analysis. This article has proposed a new approximate formula for the generalized temperature integral, which is in the following form: h(m) = x((0.11168+0.04426m))e((-0.00150-0.00055m)x-(0.039922+0.16360m)). For commonly used values of m in kinetic analysis, the deviation of the new approximation from the numerical values of the integral is within 0.4%. More importantly the new formula represents the exponential approximation, which is not found earlier, and it can result in a new and very accurate integral method in kinetic analysis. (C) 2009 American Institute of Chemical Engineers AIChE J, 55: 1766-17701 2009
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