无色的颜色编码命名:哪一个更好?
Venkatakrishnan Balasubramanian1,2, Sai Kishore Butti1,3, Nettem V Choudary3
1Centre for Advanced Materials and Industrial Chemistry (CAMIC), RMIT University, Melbourne, 3001 Victoria, Australia. suresh.bhargava@rmit.edu.au.
Chemical communications (Cambridge, England)
|September 22, 2025
概括
本综述将灰色,蓝色和绿色等生产方法根据成本和环境影响进行比较. 绿色是干净但昂贵的;灰色和蓝色更便宜但引发了环境问题.
科学领域:
- 能源科学 能源科学
- 化学工程是化学工程的重要组成部分.
- 环境科学 环境科学
背景情况:
- 是全球能源转型的关键能源载体.
- 现有的生产方法在技术经济和环境足迹方面存在很大差异.
- 需要对这些不同的生产途径有一个清晰的概述,以便做出明智的决策.
研究的目的:
- 提供各种生产技术的可访问的概述.
- 使用关键指标比较这些技术,如水平成本 (LCOH) 和生命周期评估 (LCA).
- 综合影响气采用的当前政策驱动因素.
主要方法:
- 文献综述和技术经济和环境数据的综合.
- 使用颜色编码类型 (灰色,蓝色,绿色等) 进行生产方法的分类. ) 的情况.
- 对关键绩效指标 (LCOH,等级能源成本,LCA) 的分析进行比较评估.
主要成果:
- 灰色和蓝色目前是最具成本效益的,但具有环境缺点.
- 绿色提供了最低的排放量,但面临着高成本和基础设施挑战.
- 新兴的技术,如粉红色,色和白色,带来了新的可能性和挑战.
结论:
- 必须全面评估生产技术,考虑成本,环境影响和可扩展性.
- 政策,国际合作和创新对于推动在脱碳中的作用至关重要.
- 本综述是气行业利益相关方的入门资料.
相关概念视频
01:03¹H NMR Chemical Shift Equivalence: Homotopic and Heterotopic Protons
4.1K
Protons in identical electronic environments within a molecule are chemically equivalent and have the same chemical shift. The replacement test is a useful tool to identify chemical equivalence and predict NMR spectra. A substituent replaces each of the protons being examined and the resulting molecules are compared. If the same molecule is obtained, the protons are equivalent or homotopic. Replacement of any hydrogens in ethane by chlorine yields chloroethane because all six protons are...
4.1K
02:05Degree of Unsaturation
10.4K
The degree of unsaturation (U), or index of hydrogen deficiency (IHD), is defined as the difference in the number of pairs of hydrogen atoms between the compound and the acyclic alkane with the same number of carbon atoms. Each double bond or ring costs two hydrogen atoms compared to a saturated analog and results in one degree of unsaturation.
The degree of unsaturation for hydrocarbons is U = (2C + 2 − H) / 2, where C is the number of carbon atoms and H is the number of hydrogen atoms.
The degree of unsaturation for hydrocarbons is U = (2C + 2 − H) / 2, where C is the number of carbon atoms and H is the number of hydrogen atoms.
10.4K
02:39Indicators
58.7K
Certain organic substances change color in dilute solution when the hydronium ion concentration reaches a particular value. For example, phenolphthalein is a colorless substance in any aqueous solution with a hydronium ion concentration greater than 5.0 × 10−9 M (pH < 8.3). In more basic solutions where the hydronium ion concentration is less than 5.0 × 10−9 M (pH > 8.3), it is red or pink. Substances such as phenolphthalein, which can be used to determine the pH of a solution, are...
58.7K
01:09¹H NMR: Pople Notation
2.5K
The Pople nomenclature system classifies spin systems based on the difference between their chemical shifts. Coupled spins are denoted by capital letters with subscripts indicating the number of equivalent nuclei. When the coupled nuclei have well-separated chemical shifts, they are assigned letters that are far apart in the alphabet, such as A and X. When the difference in chemical shifts is small, coupled nuclei are named using adjacent letters of the alphabet (AB, MN, or XY).
A proton...
A proton...
2.5K
02:39Emission Spectra
75.7K
When solids, liquids, or condensed gases are heated sufficiently, they radiate some of the excess energy as light. Photons produced in this manner have a range of energies, and thereby produce a continuous spectrum in which an unbroken series of wavelengths is present.
75.7K
03:10Molecular Compounds: Formulas and Nomenclature
55.1K
Molecular compounds or covalent compounds result when atoms share electrons to form covalent bonds. Since there is no electron transfer, molecular compounds do not contain ions; instead, they consist of discrete, neutral molecules.
55.1K