Insurance – Breast pumps are expensive – there are no two ways about it.Price – The S1 is slightly more expensive than the S2 at around $200, however, this is because it offers much more flexibility due to its battery-powered technology. ![]() Because the S2 needs a power source and has an attached cable, it’s not as flexible, but might be more reliable if you’re forgetful. However, because it’s battery-powered, you’ll need to remember to take your charger with you if you’re going away for a longer period. Chargeability – The S1 is an excellent choice if you need your breast pump to be portable.Blue Is For Boys – If you’re old-fashioned and consider color as part of your choice as you want all of the accessories in your home to match, then you’re out of luck if you have a baby girl, as the S1 only comes in blue.It’s a great idea if you travel a lot or if you need to express on a busy schedule. The battery power can last for up to 3 hours of use from being fully charged. Portability – The S1 has a rechargeable battery and doesn’t need a power source to use it.Overall, both the S1 and S2 versions are excellent choices for your first step into breastfeeding, but if you’re looking for some insider knowledge to make sure you’re absolutely making the right choice – let’s take an even closer look: Spectra S1 Pros & Cons They may give it more functionality and power but isn’t the best if you’re on the go. The S1 has a rechargeable battery built-in, so it’s an excellent choice if you need your breast pump to be portable, while the S2 requires you to plug it into an outlet. One of the other main differences is chargeability. If you feel bound by color, that small variation may have already made the decision for you. Not ideal if you’re looking for a breast pump that can easily match your nursery accessories. The S1 only comes in white and blue, while the S2 only comes in white and pink. Unfortunately, each Spectra only has a single color option, which does spark some controversy. The in-depth atomic-level understanding of the catalytic mechanism will be beneficial to further rational design of high-performance catalysts for syngas conversion.One of the main differences, or at least the one that everyone notices straight away between the S1 and S2 versions is the color. In combination with in situ spectroscopic characterizations, we revealed the full cycle of the formate-methoxy-based pathway for the syngas-to-methanol conversion via synergistic interplay of the dual active sites. More importantly, the dynamic evolution of the reaction intermediates and active sites during the reaction process was elaborated at atomic level by a series of double resonance and multi-dimensional correlation NMR experiments. Zn III– structure were unambiguously identified.Notably, specific surface dual active sites for syngas activation with –Al IV–OH Herein, we comprehensively investigated syngas conversion over a representative ZnAl 2O 4 spinel oxide with state-of-the-art solid-state NMR technologies. ![]() The urgent need for efficiency improvement in the oxide-zeolite bifunctional syngas-to-hydrocarbon catalysis necessitates in-depth mechanistic insights into this reaction, especially for the initial syngas conversion over the oxide component, which remains poor. The detailed synergistic effect of heteroatoms for syngas conversion was revealed for the first time at atomic level, which will significantly benefit further rational design of high-efficiency catalysts. Here, we unambiguously identified the specific surface dual active sites on the bimetallic oxide catalyst, and their dynamic evolution with the reactants/intermediates in the syngas activation and conversion, using advanced solid-state NMR techniques. However, to become a strong competitor to the conventional Fischer-Tropsch synthesis (FTS), a breakthrough in syngas conversion of OXZEO catalysis is highly demanded, which relies on the in-depth understanding of the structure-activity relationship of the catalysts/reaction, especially on oxide component. Recently, the oxide-zeolite (OXZEO) bifunctional catalysis has emerged as a new platform for this conversion, showing a great potential for further industrialization. The catalytic syngas conversion is the key route to bridge the gap between various carbon resources and the essential chemicals.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |