Title
Sntesis solgel y caracterizacin superficial de xidos de circonio: Materiales catalticos slidos cidos (Spanish Editi,Used
Delivery time: 8-12 business days (International)
En el presente trabajo se sintetizaron por el mtodo solgel, una serie de soportes catalticos con base en xidos de circonio (ZrO2) modificados por la presencia de agentes cidos tales como iones sulfatos (SO42), fosfatos (PO43) y un heteropolianin ([PW12O40]3). El inters principal de esta investigacin radic en estudiar el efecto de los agentes dopantes sobre las propiedades trmicas, texturales, estructurales y cidas del ZrO2, as como analizar su actividad cataltica en la isomerizacin de hidrocarburos de cadena corta (C5C6), debido a que esta reaccin representa una alternativa en la obtencin de combustibles con alto nmero de octano. Para ello, los materiales sintetizados se caracterizaron mediante anlisis trmicos, difraccin de rayos X, fisisorcin de nitrgeno, espectroscopa de infrarrojo, termodesorcin programada de amoniaco, termodesorcin programada de nbutilamina, titulacin potenciomtrica con nbutilamina, deshidratacin de 2propanol y adsorcin de piridina analizada por espectroscopa de infrarrojo. La actividad cataltica de los xidos de circonio acidificados se evalu en la isomerizacin de npentano y nhexano a 250C y presin atmosfrica.
By changing our most important processes and
products, we have already made a big leap forward. This ranges from the
increased use of more sustainable fibers to the use of more
environmentally friendly printing processes to the development of
efficient waste management in our value chain.
⚠️ WARNING (California Proposition 65):
This product may contain chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
For more information, please visit www.P65Warnings.ca.gov.
Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
Shipping & Returns
Shipping
We ship your order within 2–3 business days for USA deliveries and 5–8 business days for international shipments. Once your package has been dispatched from our warehouse, you'll receive an email confirmation with a tracking number, allowing you to track the status of your delivery.
Returns
To facilitate a smooth return process, a Return Authorization (RA) Number is required for all returns. Returns without a valid RA number will be declined and may incur additional fees. You can request an RA number within 15 days of the original delivery date. For more details, please refer to our Return & Refund Policy page.
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Warranty
We provide a 2-year limited warranty, from the date of purchase for all our products.
If you believe you have received a defective product, or are experiencing any problems with your product, please contact us.
This warranty strictly does not cover damages that arose from negligence, misuse, wear and tear, or not in accordance with product instructions (dropping the product, etc.).
Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.
Secure Payment
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
We accept payments with :
Visa, MasterCard, American Express, Paypal, Shopify Payments, Shop Pay and more.