Table 2 Input parameters for SMR, SMR + CCS, and electrolysis production pathways with corresponding units

From: Effect of hydrogen leakage on the life cycle climate impacts of hydrogen supply chains

 

Input Parameters

Values

Units/kgH2

SMR

Natural Gas

4.6

m3

Water (cooling)

0.4

m3

Deionized water

4.4

kg

Oxides

1.40E-03

kg

Nickel

2.00E-04

kg

Portafer

3.00E-04

kg

Quicklime

4.80E-05

kg

Silica

1.20E-05

kg

Zeolite powder

9.00E-04

kg

Electricity (CCS only)

1.15

kWh

Electrolysis

Electricity

50

kWh

Deionized water

9

kg

  1. Oxides: Aluminum oxide, Chromium oxide, Copper oxide, Magnesium oxide, Molybdenum trioxide, Zinc oxide. Natural gas, water oxides, nickel, portafer, quicklime, silica, and zeolite powder data sourced from Ecoinvent. Electricity input for CCS was obtained from NETL39. The electricity input for electrolysis is obtained from the National Renewable Energy Laboratory40 and the deionized water input is obtained from WaterSMART Ltd46.